about.me
I have had the opportunity to try out and create a profile at about.me - check it out: http://about.me/marthie. I'm still not sure to what level this would be useful to me, but I'll continue updating it as needed. It does seem like a neat tool for someone who has many different faces all over the internet.
If you're interested in trying it out too, you can sign up at http://about.me/ and you may be able to receive 50 free MOO business cards.