It might be useful to have a list of places where you can submit indie games. I will update this list when I find more.

http://www.indiegamenews.com/ (mail the owner about your game)
http://forums.indiegamer.com/ (post a forum message, but you have to wait 48 hours after registration.)
http://playthisthing.com (add to suggested games)
http://jayisgames.com/game-submit/ (just fill in the form)
http://www.indiegamemag.com/ (submit for review)