#measurement

Fri Sep 11 — We photograph the front pages of Korean forums and English-language Korea subreddits once a day. Over eight consecutive days, 0.2 percent of Korean forum posts were still there the next evening. In the subreddits it was 36 percent.

Fri Sep 11 — We keep a daily copy of three English-language Google News queries about Korea. Over nine days the phrase 'KPop Demon Hunters' appears in 645 of 1,110 K-pop items. The busiest subject in the drama feed reaches 71, in the economy feed 90.

Fri Sep 11 — Ten days of Korean front pages, 1,365 headlines. One entertainment desk opened 27 percent of its stories with an age in quote marks. The other did it in 3 percent. The general and business papers: zero in 1,080.

Fri Sep 11 — A forum called spreading visitors beyond the capital the unfinished task. In the admissions table 58 percent of foreign entries are already outside it, and the top district is Gangneung, not Jongno. But 112 of 206 districts count nobody.

Fri Sep 11 — A Korean desk called it NewJeans' lost two years. We counted English Wikipedia lookups for all eight fourth-generation girl groups. NewJeans sits at 0.61x its pre-dispute reading; the other seven have a median of 0.66x. Two fell further.

Sun Sep 06 — I Am Solo is heading to Netflix in over 190 countries. Netflix publishes weekly top tens for 94. Of 974 Korean titles that ever charted anywhere, the median reached 2 countries and 447 reached exactly one.

Sun Sep 06 — Christian metal band Demon Hunter has sued Netflix over the name KPop Demon Hunters. Of 974 Korean titles on the Netflix charts, 423 already carry an English name that belongs to a work from somewhere else too.

Sun Sep 06 — Korean pages carried four Jin stories in one day, one calling him the most-searched person in the world for Gucci. We cannot count Google searches, so we counted English Wikipedia reads against his own bandmates.

Sun Sep 06 — People search the phrase for individual Korean films and shows. The Netflix files cannot answer it — but they can say where a title stands among 546. Reaching No.1 in some country turns out to be the common case, not the rare one.

Sun Sep 06 — Korea runs a public platform holding 1,344 culture datasets — tourism, leisure, K-pop audiences. We counted every listing. Most cost nothing. Only 322 have been updated in the last twelve months.

Sun Sep 06 — Astrology sites tell you which signs go together. Nobody checks. We counted all 4,651 member-to-member pairings inside 259 K-pop groups and set each pair of signs against chance. Every one lands between 0.75x and 1.25x.

Sat Sep 05 — Seven members, six signs, one overlap — RM and Jung Kook, both Virgos. Drawing seven Korean stars at random gives six distinct signs 38.7% of the time, the commonest outcome there is. The population they came from is the strange part.

Sat Sep 05 — We counted daily English Wikipedia reads for every performer named in a K-drama casting story, 14 days before against 7 days after. Four held level, two were read less afterwards, none rose. Six is a small number and we report it as six.

Sat Sep 05 — Of the five K-pop groups that debuted in 2025, Cortis is the only one read more in English now than in its first months — 2,196 readers a day against 231. Three of the other four are read less than they were at debut.

Sat Sep 05 — We counted daily Wikipedia reads in both languages for the same six Korean singers. Jimin draws 2,091 English readers a day and 61 Korean ones. Lim Young-woong, who filled a stadium three nights this weekend, draws 91 in English.

Sat Sep 05 — English Wikipedia has moved six of the 100 most-read Korean stars to a different name in the last two years. In every one, the old title still takes most of the reading — 72% to 94% of it, four to 22 months on.

Sat Sep 05 — Taemin and TEN both had comeback stages on Music Core on 5 September. We put eight K-pop soloists beside their own group on English Wikipedia: only Hwasa is read more than their own group. Jimin sits at 0.27 of BTS.

Sat Sep 05 — Fan-vote apps report number ones in streaks of weeks. We counted which BTS member the English Wikipedia read most, week by week, for 171 weeks. V led 108 of them — and Jung Kook still has the higher median week. Both are true.

Sat Sep 05 — 93 countries took KPop Demon Hunters into a Netflix top 10, number one in 76 of them. A trade headline says DreamWorks is answering with Forgotten Island. We counted what is being answered — Korea sat exactly at the median.

Sat Sep 05 — Netflix publishes two Top 10 data files. We counted what is in them so you do not have to download 30MB to find out: every column, the weeks and countries covered, and which columns are empty and how often.

Sat Sep 05 — Of the 100 most-read Korean stars, the 20 whose article sits under a single word carry a median of 6.5 bracketed titles — Rain (entertainer), Rain (singer), Rain (soldier). The 80 with a full name carry none. Fame does not explain it.

Sat Sep 05 — English Wikipedia moved his article to Jung Kook in March 2025. Seventeen months on, 4.09m of the 5.77m reads about him land on the old title. Of the 30 most-read Korean stars, only he is reached mostly by a dropped name.

Sat Sep 05 — He plays Taipei tonight and Jakarta next week. We counted daily Wikipedia views in every language those seven cities speak: English leads at 120.7 a day, and English is official in one stop of the seven.

Fri Sep 04 — We joined 4,535 Korean entertainers to the schools Wikidata records for them. School of Performing Arts Seoul put 58.4% of its 125 alumni into ten or more language editions. Yonsei managed 16.0% of 75.

Fri Sep 04 — The same 1,113 actors, the same 30 days. Charting credits move an actor's attention floor sevenfold but not the direction it travels: the median actor was flat in all four bands. The trend we did see failed its own resampling test.

Fri Sep 04 — We counted English Wikipedia readers for 2,372 Korean music acts over 30 days. The top 5% took 50.2% of all daily reading. Among groups alone the top 1% took 29.0%, against 19.2% among individuals.

Fri Sep 04 — We counted 1,303 members of 263 K-pop groups. Put on a per-day footing, March runs at 1.20 times an even month and July at 0.69. Scattering the same birthdays evenly 10,000 times produced a gap that wide 1.1% of the time.

Fri Sep 04 — We took the 1,113 actors credited in Netflix's charting Korean titles and counted their English Wikipedia readers. Median daily views go 56, 137, 304, 392 as charting credits pile up. The single highest belongs to someone with three.

Fri Sep 04 — We ranked 3,253 Korean stars by the same surge measure a trending list uses. The top result rose 654x — from one English Wikipedia reader in week one to 654 in week four. Put a floor under it and the top falls to 6.26x.

Fri Sep 04 — Across 90 K-culture headlines from two Korean outlets, 19 mentioned BTS. Only Jin and Jimin were named — 12 and 9 times. V and Jung Kook, the two most-read members on English Wikipedia, were named zero times.

Thu Sep 03 — The scattered cases are the famous ones. Of 7,730 Korean chart lives lasting two weeks or more, 6,725 are present every single week from first to last. The median is three weeks, spanning three weeks, unbroken.

Thu Sep 03 — It sat on some country's Netflix Top 10 for 62 straight weeks. Counted country by country, four of 93 passed 52 weeks and only Latvia held every week without dropping out. Korea ran 32 weeks, the median of all 93.

Thu Sep 03 — It is the longest any Korean title has spent in one country's Netflix top 10. The 72 weeks are spread across 96 weeks of calendar, and the longest unbroken run inside them is 53. Squid Game's 43 weeks in India span 201.

Thu Sep 03 — Of every Korean title either country had on a Netflix top 10 in the same week, 77.9% was on both lists. The 15 most alike pairs on the board are all in Southeast or East Asia — and nowhere resembles Korea's own chart.

Thu Sep 03 — Britain manages 33%. Ranking 92 markets by how often they carry a Korean title in the same week it first charts anywhere puts eight Asian markets at the top — and the median lag, the obvious measure, cannot see any of it.

Thu Sep 03 — Every chart row carries a weeks-in-top-10 number. Across 500,340 rows it adds exactly one on every consecutive week — and after a gap it keeps counting 98% of the time. It is a cumulative tally, and reading it as a streak overstates runs.

Thu Sep 03 — Korean titles have held nine or ten of a chart's ten places 51 times. Outside Korea every one is in Vietnam, Indonesia, Malaysia or Singapore. Taiwan, fourth by Korean share, has never done it.

Thu Sep 03 — Across 9,246 Korean entertainers, the 992 credited with both singing and acting sit in a median of 10 Wikipedia language editions, against 1 for either alone. Hold that count fixed and actors are still opened more often.

Thu Sep 03 — Two Korean dramas were reported this week as topping Netflix's non-English chart. Counted country by country, Agent Kim Reactivated reached number one in 25 of the 81 countries that carried it, and never appeared on a US or UK chart.

Fri Aug 28 — Seoul Institute of the Arts has 352 people in our roster, more than any school. Twenty-eight are in a group. School of Performing Arts Seoul has 102.

Fri Aug 28 — Seoul Institute of the Arts has more alumni in our Netflix set than any school. Their titles reach a median of 16 countries. Dongguk's reach 41.5.

Sat Aug 15 — We tried to set what Southeast Asia reads about Seoul beside where foreign visitors walk. In 16 of 24 districts the admissions table counts no tourist site at all — Jung, which holds Myeongdong, among them. It maps where counting stops.

Fri Aug 14 — We measured 2,238 places in Korea against four Southeast Asian Wikipedias. YG Entertainment scores 111.47 and Seoul 106.54. Twelve companies out-read 520 cities and districts on the median. What this cannot see is a single restaurant.

Fri Aug 14 — We measured concentration — the share of a name's four-country reading that sits in its biggest country. K-pop groups come closest to even at 41.7%. The most concentrated row turned out to be an artefact of Wikipedia, not of attention.

Fri Aug 14 — Groups, solo musicians, actors, athletes — the Malay Wikipedia takes 7.6% to 8.6% of the four-country reading for each. For luxury and car brands it takes 23%. Four categories in a narrow band, one well outside it.

Fri Aug 14 — Median reads of a Korean actor's own Wikipedia article, by how many of their titles reached a Netflix chart: 1.21, 2.15, 4.72, 11.94. Yesterday the same panel gave us nothing, because we were measuring the wrong thing.

Thu Aug 13 — Split Indonesian, Vietnamese, Thai and Malay Wikipedia reads by month. All eleven esports players in the panel peak in the same month, and they agree in three of the four years we measured. The footballers never once agree.

Thu Aug 13 — We said Korean esports players in the Southeast Asian Wikipedias all peak in one month. Split by game, 85.7% of them play League of Legends. Korea has more StarCraft II players, and four of them have an article in those editions.

Thu Aug 13 — Chinese, Swedish and American esports players have articles in the Southeast Asian Wikipedias at roughly the rate Korean players do. 9.1% of theirs draw enough reads to measure, against 71.4% of the Korean ones.

Thu Aug 13 — We put 2,511 Korean entertainers, 900 athletes and 22 luxury and car brands on one scale. BTS clears the footballer. Of everyone else measured, nobody does — and the most-read brand sits at a sixth of the leaders.

Thu Aug 13 — We tried to test whether debuting younger buys a wider career. The answer did not come out in one direction, so we went looking for why — and found that for 658 of 1,329 actors, the chart only ever lit them once.

Thu Aug 13 — We measured 1,972 Koreans with one instrument. Son Heung-min sits above all 1,023 actors. But 22 actors clear 100 against two athletes, and the two groups are read in different countries. Musicians who never acted are not in this panel.

Thu Aug 13 — A Korean player is read across Southeast Asia; a Korean manager is read in the one country that hired him. Median concentration in a single country: 50.55% for the players, 81.35% for the managers.

Thu Aug 13 — Four Southeast Asian Wikipedias, twelve months, 926 Korean athletes. Three of the four read almost only football. In the fourth, esports takes 60.6% of the reads and the most-read Korean athlete is not a footballer.

Mon Aug 10 — 288 Korean titles charted somewhere in 2022 and 215 in 2025, while the places they held rose 9.7%. Remove each year's biggest title and the ten largest gained 3.1 points — much of the concentration is one show returning.

Mon Aug 10 — Two works can carry the same English title, and a chart row does not say which one it is. Thirteen titles in our Korean panel turned out to be foreign works. The test that found them is not the name — it is where they charted.

Mon Aug 10 — Across 210,355 finished runs, a Korean film holds a country chart for 1.96 weeks on average and every other film for 2.02. Korean series run 3.7 weeks against 2.71 — and removing each group's biggest title barely moves it.

Mon Aug 10 — When a Korean title reaches a market's top three, the other Korean titles there fall by 0.403. Non-Korean arrivals cost 0.013. That looks decisive until you notice the two groups start from different heights.

Mon Aug 10 — The animal year and saju are two different things, and Koreans use both. We counted the animal years of 1,047 Korean actors who reached a Netflix chart: chance would put 87.3 in each sign, and the count runs 76 to 103.

Mon Aug 10 — Opening position is the only fact anyone has on the first Monday. Across 8,324 Korean series runs it moves expected length by 0.56 weeks a step — against 0.44 for other series, 0.33 for Korean films and 0.22 for other films.

Mon Aug 10 — Hold run length fixed and most of that gap closes — among titles that lasted five to eight weeks it is 26.6% against 28.6%. Among those that lasted nine weeks or more it does not close: 9.7% against 24%.

Mon Aug 10 — For each of 93 markets we took the median breadth of the Korean titles that reached it. Korea's own chart: 2. Estonia, Slovenia, Switzerland: 77, 76, 72. Most of that gap is how often a market plays Korean titles at all — but not all of it.

Sun Aug 09 — Titles with six to ten weeks on Korea's own Netflix chart reached ten countries 56.5% of the time, against 11.4% for those with one or two. But 29 reached twenty countries without ever charting in Korea.

Sun Aug 09 — Everything written about a chart is about getting on it. We measured 11,722 departures instead — the position a Korean title held the week before it vanished, against the 10.0% each rank would take if position did not matter.

Sun Aug 09 — Korean titles hold 7.9% of the world's Netflix top 10 places — 39,139 of 498,480. Of those, 82.3% carry the label we use to exclude same-name foreign works. 16.4% carry no label at all, and we keep them because we cannot check them.

Sun Aug 09 — Between 2022 and 2025 Korean share fell in nine of the ten Asian markets we track, a mean of 8.56 points, and rose in 69 of the other 83. Japan went from 32.8% to 11.9%. The one Asian market that rose is Korea's own.

Sun Aug 09 — Among 170 Korean titles that reached 20 countries or more, the first week already holds a median 40% of the countries they ever reach. But 58 of them started under 25% and 38 were nearly everywhere at once.

Sun Aug 09 — Across 93 Netflix markets Korean titles hold 7.9% of chart places. In the 20 markets where their share runs 5–10%, they hold only 5.4% of number-one places. In the ten where they are strongest it inverts: 36.6% at number one against 27.4%.

Sun Aug 09 — Korean titles hold 7.9% of Netflix country chart places. Spread evenly that would put at least one on 55.9% of country-weeks; the real figure is 41.3%. Empty weeks run 58.7% against 44.1%, and crowded weeks 4.6% against 0.5%.

Sun Aug 09 — Of 135,036 times a Korean series reached two countries charts, 58.1% arrived in both the same week. Where one did come first, only 1 of 8,333 country triples contradict each other — the markets form one stable order.

Sun Aug 09 — Across 808 Korean actors joined to Netflix's country charts, those with a title in 20+ countries draw 2.99× the median Wikipedia lookups. Match on titles and recency and the gap holds everywhere but one band, where it reverses.

Sun Aug 09 — Of 287 charting Korean series with a company credit, the 238 that aired on a Korean network reach a median 4 markets. The 49 with no broadcaster on record reach 39. They are 17.1% of the titles and 39.4% of the chart places.

Sun Aug 09 — The leverage argument runs through cost — $360,000 an episode in 2015 against far more now. We tested what it predicts on the charts. It did not appear.

Sun Aug 09 — Of 924 gaps of four weeks or more that end with a Korean title back on a country chart, 43.6% carry a different season label — not a return at all. Of the 315 genuine returns, 94.3% happen with no other season nearby.

Sun Aug 09 — A series charts in 32.9% of countries where its company had already charted and 8.6% where it had not. Comparing each series against itself removes age, strength and size, and the gap widens. It reverses in seven markets, five English.

Sun Aug 09 — Across 220 companies with a charting Korean title, catalogue size tracks total reach (r = 0.516) and not reach per title (r = −0.118). Firms with 20 or more titles get 11.1 markets from the median title; firms with two get 13.5.

Sun Aug 09 — Of 131 companies credited on the 345 Korean series that reached a Netflix country top 10, three account for half. Counting production credits alone — the answer to the obvious objection — it is 5 of 101, on a thinner base of 156 series.

Sun Aug 09 — Netflix attaches hours viewed to 10,720 global chart rows and to 0 of its 499,180 country rows. Knowing a rank narrows the possible hours by 47.3% on the non-English series chart — least of the four, and the one Korean titles sit on.

Sat Aug 08 — Across 493,600 country-chart rows, 18,586 weekly lists put one title in two or more places. One show has held seven of the ten. Seasons explain some of it.

Sat Aug 08 — Across 1,113 Korean actors and 2,372 K-pop acts, the biggest single day is about 5% of a 30-day month for both. The raw gap of 5.0% against 6.1% disappears once the two groups are compared at the same size.

Sat Aug 08 — We tagged every changed figure with the kind of mistake that produced it. One kind accounts for nine of the thirty-six. Four kinds still have no test, and this piece names them rather than reporting the coverage.

Sat Aug 08 — Of the 421 Korean titles that reached Southeast Asia's top 10, Korea's own chart got there first for 51 and in the same week for 166 — and never charted 150 of them at all. Series enter together; films scatter.

Sat Aug 08 — Across 93 markets, 57.1% of Korean chart runs reach a higher rank than their opening week against 40.5% for everything else. Longer runs give more chances to climb — and the gap holds inside every run-length band.

Sat Aug 08 — One title takes 21.3% of all Korean viewing hours on Netflix; the biggest K-pop act takes 3.9% of English Wikipedia lookups. But half of all music attention sits on 4.5% of acts against 7.3% of titles on screen. No giant, steeper slope.

Sat Aug 08 — Measured on all 246 Korean titles instead of the fifty largest, the number-one group runs five weeks to everyone else's two. Hold length fixed and the gap that is left is 1.3× among titles that lasted six to ten weeks.

Sat Aug 08 — We asked Wikidata which country made each of our 421 chart titles. Films come back ambiguous 54.1% of the time, series 22.5%. Short names are why.

Sat Aug 08 — Across 93 markets the typical Asian one has charted 247 different Korean titles and the typical market elsewhere 85. Matching markets by how many Korean places they hold removes a third of that gap. Two-thirds of it survives.

Sat Aug 08 — Wikidata holds 2,128 Korean musical groups. Our attention panel sees the 816 with an English Wikipedia article. Among singers the gap is wider — 5,408 exist, we measure 1,421, and 3,572 of the missing ones have a Korean article.

Sat Aug 08 — Four countries, one identical decline: new group debuts look 69% down since 2017 in Korea, and just as far down in Japan, America and Britain. What we had measured was not the industry but how fast Wikidata records a new group.

Sat Aug 08 — Across 93 countries and 265 weeks the global share has not moved since 2022. That average hides nine Asian markets where Korean titles held 30.3% of places and now hold 19.5% — all nine fell, and Korea's own chart did not.

Sat Aug 08 — The Korean share moves 2.1 points across twelve months — and 14.3 in a week. Month by month it sits between 6.5% and 8.6% of the world's top-10 places. Remove each month's biggest title and the band gets wider, not narrower.

Sat Aug 08 — Wikidata records no cast at all for 266 of 901 Korean titles. Of the 635 that have any, the median series lists five names. What that limits.

Sat Aug 08 — Our panel never had a denominator. Wikidata records 785 Korean series and 1,126 Korean films from the chart era; 249 series and 172 films reached a Top 10. Series are twice as likely to be seen at all.

Sat Aug 08 — Content firms average 23.9 years old against 44.3 for the rest of the listed market, and you cannot have long tenure at a young firm. Band companies by their own age and the tenure gap narrows from 1.86× to 1.32× — it never closes.

Fri Aug 07 — 215 of 421 titles never reached a global Top 10, so Netflix's language label — the only thing that separates a Korean work from a foreign one with the same name — cannot be applied to them. They are also the small ones.

Fri Aug 07 — For the typical act, the biggest single day is 5.5% of a 30-day month. For the ten largest names the median is 11.0%. BTS sits at 25.1%, and all six of its measurable members peaked on the same date.

Fri Aug 07 — 232 of the 1,550 individuals in our K-pop panel also appear in Korean titles that reached a Netflix Top 10. They are 15% of the names and 41% of the attention. Removing them does not correct the list. It produces a second one.

Fri Aug 07 — Across 86 groups whose full membership can be measured, the members' pages were opened 3.88 times as often as the group's. Newer groups looked like the opposite until we checked why: Wikidata lists two members for Fromis 9.

Fri Aug 07 — Our Korean Netflix catalogue was 294 titles and 27.7 billion hours. It is 236 and 23.7 billion. Here is the mistake, how it spread, why counting alone would never have caught it, and what we changed so it cannot happen the same way twice.