Somehow I missed the site Kinja.com completely:
The about page says:
Kinja is a weblog guide, collecting news and commentary from some of the best sites on the web. Visitors can browse items on topics, everything from food to sex. Or they can create a convenient personal digest, to track their favorite writers.
Weblogs are much talked about, but still challenging to navigate for the average web user. Kinja is designed to bring weblog writers to a broader audience, by making it easier to explore topics, posts and writers.
It seems to be some kind of community site for all kinds of meta-data about weblogs.