I’m a busy little bee, and I join a lot of communities randomly. Here are the ones I’ve stuck with over the years, and use fairly actively (or plan to):
My portfolio site is Michael Noker .com. There, you can find hiring, contact, etc. details along with my wonderful portfolio.
If you want to contact me and don’t want to create an account on there, my personal – and thereby most frequently checked – email is Michael.Noker@gmail.com. I can also be contacted on AIM, Yahoo, and MSN messengers, but they don’t have spam filters, so you’ll have to ask nicely in a well-worded, not-reeking-of-spam email or message to one of the above places. Or just blackmail/bribe one of my friends.
If you want to contact me through one of my unused accounts on other sites, just search Google for mhoppal.