I didn't try any blog searching service before, But it makes a big difference with google, We all know the clean interfaces by Google.

I liked one part, Do you want to get the latest blogs about egypt ? Just subscribe to an RSS feed, I can even use blogsearch for my blog instead of using the one by drupal and saving a few CPU cycles and load on the SQL server.

I can even display a block with the feeds talking about egypt "like I do with Delicious.

I'm sure many things can be done but nothing more off my head ;-)