Retaggr so far appears to be the best site for placing all your contact points in one simple place.
I have multiple online personas, but Shinerweb/Chris A Wright are my main “personal” ID’s that I generally use online.

You can grab my Retaggr card below and one day I’ll get around to creating a proper contact me page on this site.
(But, I will be moving this site to a new server in a few weeks as well as updating to the newest version of Moveable Type. I just have to catch up with a few things after the Christmas break).

Best thing is, I only have to visit Retaggr to update any of my ‘points of presence’