I'm sure I'm not the first one to tell you Google has launched a blog search tool. I really don't get it though. Blogs always showed up in Google searches.
Google Search on "Windows Driver Kit."
Google Blog Search on "Windows Driver Kit."
The Google search returned all the same blogs that the blog search did. The difference is that the blog search is constrained to blogs. If I'm searching for information on the Internet, why do I care if it's in a blog, newsgroup, traditional web site or anything else. I just want the info. As time goes by the lines between these delivery mechanisms will likely blur anyway.
Do you see some benefit to this that I'm missing?