researchtips:
Google directory - blog section

Google has a blog catagory in its directory. A nice place to potter around in if you are looking for blogs and a complement to Eatonweb Portal which categorizes blogs by subject, language and country<>, Feedster, a search engine that allows you to find subject specific blog postings and Weblogs.com, which lists recently updated blogs
Check out the directories section which has a good collection of blog searchengines