Yea, it's very hard to get noticed and picked up by blogs. I'm sure these blogs get hundreds of emails a day, and the big guys (such as Chillingo) get noticed first since they probably have direct avenues to reviewers etc.
We've entered into the pre-marketing phase of our game 'Goop', and so far it's definitely been quite the challenge. We've got a decent number of views and comments in our
upcoming post forum post, but the real challenge is actually getting written about by these blogs. But we'll truck through it and see how far we can take it ourselves.