In another thread I've pointed out that
Google Blogsearch should really be quietly buried because it isn't doing what it says on the can. Barry S. pointed out that Ask has a new blog search function. The only link I can find is on a Ask site features page but I'm now using that to access
Ask blogs.
I'm really finding it excellent. For any item found you can immediately subscribe to the RSS feed or you can post it to some of the more popular social media sites. If they would only add a button to
StumbleUpon, my cup would be overflowing.

Try it, you'll like it.