I live in Phoenix. Hey, we all gota be some place. Don't blame me. But I read the LV board, and Alt. (Buba Land) board, sometimes the D.C. board. Hope you don't mind me chipping in once in a while.

I think LA, D.C., Alt., LV and then PHX are the most active in that order.

I'll bet the ladies could confirm this or tell me to shut up, I don't know what I'm talking about.

I'm not sure, would that be population = activity, have to look that up.

My friend, the Phoenix board is just starting to become active again after the 2008 Tsunami but it's still relatively dead. I'm just starting to follow the Vegas board and it seems like a fun place to hang out (duh!)
If you like active boards, check out the Minnesota board with weekday page 1 posts lucky to last 36 hours and the Florida board. With all the major Florida cities on one board, that can really rock!