Matthew Perpetua's fluxblog. Seriously, I've lost count of the number of great bands that man has turned me onto. He's goes all over the genre spectrum but he comes from an indie-rock background, so it should suit you pretty well.
I haven't been there in a while, I go back now and already he's got a bunch of great stuff there!
I also like largeheartedboy as a sort of music news aggregator. It's very indie-rock, named after a Guided By Voices song, and gives you loads to go on every day.
though it has a related blog, I've found the blog to be useless next to the show, I've gotten a lot of great music from NPR's All Songs Considered. Podcast and Blog here.