I do have an sff blog, but I neglect it terribly for long lengths of time.
Some of my favorites are:
A Dribble of Ink
A Fantasy Reader
The Fantasy Critic
Graeme's Fantasy Book Review
The Wertzone
And occasionally (but not so much anymore)
Pat's Fantasy Hotlist.
I have a huge list of others that I check occasionally, but those are the ones that have a home in my feedreader.