This was actually one of the reasons why Instagram felt smooth.
Another thing but Facebook/Instagram have also detected if a person uploads an image and then deletes it and recognizes that they are insecure, and in case of TEENAGE girls, actually then have it as their profile (that they are insecure) and show them beauty products....
I really like telling this example because people in real life/even online get so shocked, I mean they know facebook is bad but they don't know this bad.
[Also a bit offtopic, but I really like how the item?id=3913919 the 391 came twice :-) , its a good item id ]