I hope this isn't an inappropriate link, if it is I apologize in advance.
Frappr (
http://www.frappr.com) is a website where you can set up a map for your group and everyone can post a picture (if they want) and their location and you get a visual of where everyone is from. It's really neat. I'm not affiliated with it or anything, I just became aware of it when a newsgroup I frequent set one up. Here's what our map looks like, just as an example:
http://www.frappr.com/machinescnc
Not sure it this helped or anything, but figured I'd mention it anyways. =)
(Just found this site today. I'm on my second week of low carb/working out, so I'm sure you'll see more of me. What a great place!)