I ran across a site today that I saw in a news article.  It's another community site, similar to this, but narrows each user down to state, county, and city and then you can find information and network with those in those specific areas (note to this site's admins, once there are more users).  That could be a great enhancement to this site in the future.  I think it is geared more towards what would be called real estate "professionals", but should have some useful information for investors as well.

http://activerain.com/action/referrals/kcrealestate
(FYI - I will not get anything besides points on the website if you sign up through this link)