Thanks, Persephone!
From what I saw, they tried to take copyright possession of everyone's pictures last week. Apparently, Facebook has not yet made a profit, and can't even really cover its costs as of yet, so we're thinking they were planning on selling people's pictures as stock footage to make money. Hence, mine are in a low resolution and are watermarked. It would be easier just to leave my stuff the hell alone rather than try to take the watermarks out! I never put a picture online without watermarking it because you just don't know who will take it or why!