As reported by SearchEngineWatch, Google has just introduced its long awaited blog search service, becoming the first major search engine to offer full-blown blog and feed search capabilities.

"While Google web search has allowed you to limit results to popular blog file types such as RSS and XML in web search results for some time, and its news search includes some blogs as sources, Google hasn't had a specialized tool to surface purely blog postings.

Google's new service (in beta, naturally) is available both at google.com/blogsearch and search.blogger.com. Google blog search scans content posted to blogs and feeds in virtually real-time."

For Google blogs are web sites that output content in RSS or Atom feeds and which do update their content on a regular basis.

One thing to note: Google's blog search indexes all of the content it finds in anyone RSS feed, but it does not attempt to access and index the rest of the full content of those feeds as found on the web.

There is no way to submit your RSS feeds to Google outside than pinging the major blog announcement services which the Google Blog Search continuously monitors. If you don't know what this means, give a good read to this mini-guide about XML-RPC pinging and the different ways and tools in which you can do this.

For more information, see the full article by Chris Sherman on Search Engine Watch or check out the Google Blog Search FAQ.