When doing a web search and your search engine of choice (Google, for most of you, I presume) doesn't return as accurate or useful results as you had hoped, you might decide that you just want search blogs. Reasons for this can be because blogs usually contain very interesting information, comments on the information and also that they are normally very up-to-date.
The way I see it, there are two major tools for searching blogs: Technorati and Google Blog Search. Google seems to be a little faster, although Technorati has really picked up lately. Technorati also offers ways to see how popular that blog is that contains the information you searched for while you also know that the information that is most up-to-date will be amongst the top results.
Personally, I use Technorati to see how many people link to me and which the latest links are. I never use Google Blog Search.
Do you use any? If you do, which one?