Since you start a business on the violation.

"Since when do I get sued for taking too many free samples from Costco?" -> "Since you started taking millions of them to resell"

im not sure on american law, but if you give me those samples willingly i can do whatever i want with them.

Actually this is the reason why many products come with the lable "not for resale" but i have yet to find somebody who cares about it :D

>give me those samples willingly

Doesn't seem like Facebook is giving them willingly.

Since when do you get sued for breaching a contract? When the offense is worth it.

You can get sued for anything that causes harm.

Relevant life lesson: don't do things to people with money that they might perceive as harm.

Corollary: Being sued is as much punishment as losing a suit for most people.

I don't know but it's at least been that way since Aaron Swartz did it I suppose.