Technorati is an Internet search engine specifically for blogs. It indexes the blogosphere and helps you discover posts by category and through search.  It also includes the latest news, popular books and music.

technorati homepage
Technorati has a rating system for each blog’s popularity or as it prefers “authority”, that is the number of links from other blogs during the previous six months. Technorati also looks at tags authors have used to describe their content to categorize search results, showing recent ones first.

According to Wikipedia by June 2008, Technorati was indexing 112.8 million blogs and over 250 million pieces of tagged social media.

Task

a)    Explore Technorati first by clicking on the link blog directory and choosing the group(s) that interest you most

b)    Click on the Top 100 link and see those rated by Technorati’s authority ranking, which is updated daily

c) Click on the posts button in the top banner and choose a topic to do a search on within Technorati e.g  iphone 4

d)    Click on the Join link to register, submit and publicise your 23 Things blog

http://www.technorati.com