I played this game for over a year before I go into Sins and still go back to it all the time.  The community isn't huge, but is very mature and dedicated.  In fact, they are probably the best online gaming community I have ever been a part of.  The game itself is pretty great too - it is a turn based board game set up with maps sort of like Sins is... but has lots of trading card game elements (players have cards to use from decks they pre-make). 

If you are into 4X games with a lot of depth, check it out.  It's interface is a bit dated but I love the game a whole lot!

http://starchamber.station.sony.com/index.vm

http://forums.station.sony.com/strategygames/forums/list.m?category_id=1