Spinn3r is a web service for indexing the blogosphere. We provide raw access to every blog post being published - in real time. We provide the data and you can focus on building your application / mashup.
Spinn3r handles all the difficult tasks of running a spider/crawler including spam prevention, language categorization, ping indexing, and trust ranking.
You can read more about Spinn3r on their [[http://blog.spinn3r.com official blog]] or on the [[http://feedblog.org blog of their CEO]].