If you only read one wine blog (apart from mine, of course), make sure it is this one:
The Hosemaster writes the most subversive, satirical and downright amusing blog you'll ever read. He says all the things we wish we were clever and/or brave enough to say. If you have any interest in wine at all, you'll want to keep up with the Hosemaster. You may even find yourself being mercilessly skewered by his all-encompassing rancour.