Most of the Polycounters are on the Polycount steam group. Will save you a whole lot of trouble trying to track down and add everyone :P There are 2 Polycount groups on Steam at the moment, join the public group, that's the right one. http://steamcommunity.com/groups/polycountpublic -caseyjones
We do have a Twitter, folks. We use it to post random updates to Polycount as well as various game and art related links/articles/news. So if Polycount every goes down, you'll get updates through that. http://twitter.com/polycount/