Technorati

Technorati is referred to as a blog digest. You sign up and claim your blog. This increases the popularity and visibility of you blog. It searches blogs and looks at the amount of activity on this blog. Technorati ranks blogs using Authority. Authority is based on the number of unique blogs indexed by Technorati that have linked to your blog in a certain amount of days. The more blogs you have linked to your blog the better or more popular the rating.

I can see the possible benefits of this site, however I find it all very confusing!