Google Blogsearch allows for effective blog searching on the web. Google supports the self-publication movement that has shaped the blogging community, allowing for self expression, general commentary and information sharing. Google Blogsearch does not solely support blogs published via Blogger, but supports all blogs on the web. The ultimate goal of Google Blogsearch is to index all blogs on the web that has a site feed, (Atom or RSS). In addition, Google Blogsearch incorporates blogs written in foreign languages, not just English.  Google Blogsearch’s pinging service allows blogs to alert Google of a post and make indexing happen very quickly.

Check out Google Blogsearch at http://blogsearch.google.com