BlogPulse

I found BlogPulse, which has some interesting tools for analysis of the Blogosphere.
I quote "What is BlogPulse?
BlogPulse is an automated trend discovery system for blogs. Blogs, a term that is short for weblogs, represent the fastest-growing medium of personal publishing and the newest method of individual expression and opinion on the Internet. BlogPulse applies machine-learning and natural-language processing techniques to discover trends in the highly dynamic world of blogs. BlogPulse is brought to you by Nielsen BuzzMetrics. "