Bebo

Bebo is a social website with a whiteboard. That is pretty much the only feature I don't see at other social websites. The problem with most social website is that you need to bring friends with you or else you are alone. Joining groups is a way to make friends but if the groups are defunct or full of members who don't welcome new members, well you're screwed again.

Bebo --

http://www.bebo.com