So first it will set all your photos private, but give it a few months and it will set them all to public. A few months after that it will automatically enable the GPS embeded location in the photos and tell your "friends" where it was taken.
So now when people take stupid or inappropriate pictures everyone will know when and where it happened and have documented proof in form of pictures. I should patent this before facebook implements it.
Windows phone 7 by default comes with a sync to skydrive feature. That was pretty much the first thing I turned off in 2010 when I got mine. If facebook would create a similar service, I'd probably turn that off too.
Those megacorps don't need a copy of my personal files. If I want something to be on facebook, I want to pick what goes there.