What have you been searching/browsing? ;) Instagram uses Facebook/Meta algorithms for serving ads, which includes behavior. I almost never post anything about

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.