Google allows people to search Web pages, as well as search specific types of content such as news sources, shopping sites through its "Froogle" service, Usenet groups. Soon the company will also offer a service for searching Web logs, known as "blogs," Schmidt said.(from Reuters)
What I want, and can't get from DayPop or blogdex is a date of post sorted results so I can, for example, search for weblog posts on "mozilla" and just see the recent ones. Daypop will sort results by date of indexing but it indexes full pages and pretty regularly so you don't really get new stuff at the top. Maybe Google will get this right.