UPDATE: It's LIVE! Testing, testing... see comments for initial thoughts...

Just a quick one on this now as neither of the urls for Google's new "industrial strength" blog search are currently available. If you want the "we sent this out a month ago" release you can check out SearchDay or just keep an eye on blogsearch.google.com and search.blogger.com - Apparently you'll be able to search blogger sites specifically (er...) or use regular "real time" blog search - Let's not hype it before we've tried it eh?

"We look for sites that update pinging services, and then we crawl in real-time so that we can serve up search results that are as fresh as we can," said Goldman.

Google defines blogs as sites that use RSS and other structured feeds and update content on a regular basis.

Although Google Blog search focuses primarily on content published to the blogosphere, it's not a true full-text search across all sources, according to Goldman. This is because some publishers only syndicate excerpts of content via RSS. Google's blog search indexes all of the content it finds in feeds, but does not attempt to access and index the full content available on a publisher's web server.

Im excited about this, hope it's not a dissapointment when it comes online...