Indie games are gaining more and more steam as the industry focus shifts away from big, expensive blockbusters. Unfortunately, that means it'll only be a matter of time before "indie" just becomes another marketing buzz word, like it has in the music industry. That's why Casual Gameplay is important; its coverage of indie and casual games is unmatched. The site also hosts regular-ish flash game design competitions, the results of which are usually worth checking out. It doesn't get much more indie than that.