[el_cuadrado]

> To be fair to Facebook, figuring these kinds of nuances out isn’t easy

God damn it, it is called ACLs. Not exactly a rocket, or even computer science.

[e1ven]

The problem here is the picture was originally shared with someone who had permission to see it. That person then saved the file to their machine, and re-posted it to twitter.

That is not a technological problem.

[el_cuadrado]

The person who did all this was not supposed to see the original picture. The whole thing happened because of sharing, tagging and mutual friends. It is a technological problem.

[dredmorbius]

Oh yeah, and ACLs are so easy to apply and maintain ....

Ironically, I first ready that abbreviation as CIA, which may be appropriate as well.