FWIW, a friend of mine fell for one of those 'prayer request' emails and managed to pick up a Trojan targeting Facebook. The intruder/hacker gained access to her Facebook account (and her Yahoo! mail account), posted a photo of gay porn to her Wall, then immediately commented on the photo, writing "OMG, I didn't intend to upload that one! How do I remove it?" Variations on the comment could be "OMG, I forgot that I was on Facebook when I wrote that! Someone tell me how to delete it!"
Funny, though.
Funny, though.