Searching the BlogSphere

This is pretty darn cool. Micah Alpern has released a Google BlogSphere search tool (w/source in PHP) that will search across all the sites whose RSS feeds are found in your OPML list.

I think Micah describes it best:
“Until the semantic web arrives the best method we have to understand a users point of view is to examine the RSS feeds they subscribe to. I currently read RSS feeds from over 70 websites. This list of RSS feeds includes friends, publications, and domain expects; all people whose opinions I value. If Googling my weblog is like searching by backup brain, then searching all sites in my RSS news aggregator is like searching the brains of people I respect and find interesting.” (link via Sebastien Paquet)