How to find things in the blogosphere

feedster.com: search engine that searches blogs and RSS feeds via XML.
Great to use to search for key words and phrases.
Example: CosmoGirl+ Xanga (Xanga is a popular teen blogging site)--see results here
See blog links mentioning cosmogirl alone here.

technorati: search engine that searches blogs and rss feeds. Good to use to see which blogs are linking to a specific blog, story, post or article.
Example: http://susanmernit.blogspot.com See results of link cosmos here
See shopetc.com links here.

pubsub: another search tool to check out.

Monitoring blogs makes for great market intelligence--and you can arrange to get updates via email.