Comment by gf000

> Facebook is the ad network and serves its own ads.

Well, it certainly replaces valuable data like how long have you looked at a given ad with either nothing, or random noise (e.g. if you draw a rectangle over them).

We are no longer living in 2013 where people posted about everything they do. Sure, plenty people do so still, and our interactions with that (even implicitly like how long we looked at it) is plenty of value in and of itself, but I disagree with the general notion.

The effectiveness of ads is that they can just throw stuff at you and "see" what sticks, without you ever telling a word.