Social Networking

I have been doing a little social networking in order to get in touch with old friends, new friends, clients, past clients, and potential clients. If you have Facebook and want to add me you can find me here. If you have Myspace and want to add me you can find me here. Also I am on Twitter, here.

What social networking tools do you use if you do not use either of those, and have you found them beneficial to helping you keep in touch?