I've gotten into a lot of stuff from these:
Slam Depot - Some brutal/slamming death metal and some brutal deathcore. I've gotten into a good bit of bands from the site, but most of the shit I've downloaded from it, I've deleted, so yeah... haha.
Slamming Brutal Death - Once again, slam/brutal/core. Not much variety in the death metal I listen to, I know.
There's a few other grindcore, noisecore, hardcore punk and black metal blogs I've gotten into, but Google is failing me right now, so I can't post them. Nobody on here really listens to what I listen to, anyway, so no reason for it anyway, haha.