The post on prominent women bloggers made me wonder — is there some good and relatively broad aggregator of blog traffic statistics, besides Truth Laid Bear and Alexa? Truth Laid Bear is good, but it's missing many blogs, and also has some seeming junk data in it. Alexa, as best I can tell, works only with top-level domain names (and may suffer from various self-selection biases).

Can one do better than that, even as roughish estimates? Or is the problem simply that many leading blogs' counters are hidden, and the Truth Laid Bear list is as good as one is going to get?