FB ads engineer here. Every time I read these threads, I'm 1. Flattered by how sophisticated HN thinks our systems are (they're not. and we're not that smart. FB's A-team stopped working on ads a long time ago) 2. Entertained by how HN thinks ad targeting works (we don't want to know everything about YOU. we want to know basic info about all of our users.) Hypertargeting doesn't work. Targeting small audiences doesn'…
I like to believe it is not.