The Redditors have found his info:
David Mortari
24419 Florence Acres Rd
Monroe, WA 98272-9662
(360) 794-7191
The people at Bebo have made his account private and are logging IP numbers so you have to register to see his page:
http://www.bebo.com/Profile.jsp?MemberId=3042738902
I think the best thing we can do is share this. Not for shock value but so that the right people notice and can take action against this guy.