2 ms·

FB/IG has a "Why am I seeing this ad?" and you can see what demographics being targeted are, e.g. location, gender, age range. Funnily enough, Facebook has bee

• tomjen3 4y ago
  It is probably somebody trying to sell to a new market (men buying gifts for their dates). I got so many ads for dating sites and related crap when I set my FB status to single. I will never get why FB shows so terrible ads when they supposedly know so much about us.
• bedast 4y ago
  What have you been searching/browsing? ;) Instagram uses Facebook/Meta algorithms for serving ads, which includes behavior. I almost never post anything about diabetes in Instagram, but because many other sites (ie: reddit) use Facebook libraries for whatever reason they are using them, Facebook knows I'm diabetic, and I get served ads for diabetes products, bogus supplements that "cure" diabetes, health programs that use diabetes products for non-diabetes purposes (yes, this is a thing), and so on. If a site uses a FB tracker library (which is going to be part of FB based auth), your usage is tracked and info based on that is used to serve ads across all Meta products.