I wouldn't go on either. I find it creepy and don't see the point. When I was teaching, I didn't want my students to "find" me there and now I don't want future clients to find me either...
One of my older son's friends wrote a scathing comment about me and my husband on his MySpace page. I couldn't quite figure out why, since she had never met me; but it turned out that I actually worked with her mom (I didn't know this at the time) and she was basically ranting about caring, normal parents as opposed to her experience of growing up in a dysfunctional family. She also has "other" issues. So, this kind of turned me off of these types of sites.