Michael Bauer's got a great blog post about Mario Batali's recent anti-blog rant.
I couldn't agree more with what Bauer has to say, and I think there is a distinction between rantings on "ratings" sites vs. opinions posted on someone's food blog. I stand by my original point that the good stuff rises to the top, and that anyone who trusts something just because it's on the internet has bigger problems than missing out on a good restaurant.
Bauer sums it up pretty well when he says, "People have many sources of information, so they don't need to turn to the traditional media. Respect has to be earned." It's unclear if he's referring to blogs, or to restaurants/chefs, but it clearly applies to both.