Google appears to have started to promote its blog search on its main page, just like they promoted other properties like google news. The last google promoted google news, here was the effect as Hitwise reported:
when Google placed a link to Blog Search on the Google News home page, causing a 168% surge in market share for Google Blog Search over a two week period”. Since then, approximately 60% of Google Blog Search’s traffic has been coming directly from Google News, compared to less than 1% before the change.
Its only a matter of time before adsense pops up on blogsearch. Meanwhile technorati seems to be enjoying its slumber party!