Joseph Scott writes a great review of current feed searches, including Technorati and Feedster. Joseph bemoans the current offerings and then ends by wondering when Google, Yahoo, and MSN will launch their own feed search engine.
I suspect it will be soon. I'm curious what Technorati and Feedster will do to compete when faced with an equal or superior product from the big guys. Blogory is a more unusual product, more of a discovery tool to easily find interesting weblog articles than a blog search engine, but Technorati and Feedster are pure search engines specialized to a particular type of news source. Can they survive the entry of a Google or Yahoo?
Rich Skrenta and Jeremy Zawodny also have some interesting comments on this topic.