That happens to me a lot too.
You would be surprised at how many folks read your posts here but don't say anything. I used to lurk a lot and read folks posts without responding.
Sometimes it helps to post more detail about what, exactly, you are doing in Mass Effect. It often sparks discussions.
I've been absolutely addicted to Mount and Blade. It's a bit of a tough game, but I've been trying to help build up my little village that the King of the Nords granted me. I'm up to about 55 soldiers in my army, not quite enough to lead a siege, although I've helped win a few. My guy is pretty awesome but I still get beat every once in awhile, it's tough to fight off ten guys in this game!