I'm actually pretty bad at reading "mainstream" feminist blogs; I mostly rely on my LJ friends who I know through WisCon for updates and/or links to things that are going on.

I also read Bitch and Bust magazines, and "am a fan of" Bitch on Facebook, so I generally read the articles they post there (much more frequently than their magazine).

I'll probably start reading this one (http://disabledfeminists.com), which was made in response to Feministing.