Corporations gather massive amounts of personal data to feed into algorithms. This obviously sucks, but it adds insult to injury that despite this treasure trove of data the algos are still so bad. Netflix knows I watch a lot of Korean shows. It surely also knows I watch ONLY those Korean shows that have subtitles in English. Yet, the app keeps sending me emails, notifications and in-app alerts about a show I would love to watch yet can't because there are no subtitles in English.