Using RhNav - Rhizome Navigation I wrote a data aggregator for Technorati's API. The first result is a video which visualizes blog domains by analysing Technorati's Cosmos (the blogs which link to a particular URL). The video is a screencast of RhNav fetc
Masters thesis on social software (e.g., blogs, wikis, social bookmarking services)...and how they support learning, knowledge management, and communities of practice.
A national phone survey of bloggers finds that most are focused on describing their personal experiences to a relatively small audience of readers and that only a small proportion focus their coverage on politics, media, government, or technology.