Google Blog Search (beta) was launched.
However, it seem like the Google Web Search do not include the results of the blogs that indexed under Google Blog Search. (Or not update as frequent as Blog Search)
And you might find that your blog is not indexed by Google Blog Search. Here the explanation from Google:
Enjoy blogging. :)
How do I get my blog listed?
If your blog publishes a site feed in any format and automatically pings an updating service (such as Weblogs.com), we should be able to find and list it. Also, we will soon be providing a form that you can use to manually add your blog to our index, in case we haven't picked it up automatically. Stay tuned for more information on this.