I was trying to think of all the sites I am involved with in one way or another: LinkedIn, Plaxo, which I do not use at all. Myspace and Facebook, not too active. Blip.tv for podcasts. Twitter (a tweet or two a day). Soundcloud (rarely go there). Virb (ditto). Then my own sites: knoxbronson.com, babysnohelp.com, theseasonscd.com, sunpopblue.com ... varying degrees of activity. Flickr/Static for photos & posting to Facebook/Twitter simultaneosly. Oh ... youtube of course!