Facebook won't take your info. Lol that is fucking hilarious. I'm sure they won't just stuff a tracking cookie or some other bullshit they have been doing since day 1.
Rumor was Sony removed Facebook for that reason since Facebook had access to your friend lists etc. But sure, I guess if you don't link up to stream anything or share videos or screenshots, FB won't have access. Anyway Sony, not the best at keeping user info safe, thought FB was too risky to get back on the system. The removal was supposed to be temporary.