Google has finally created a blog search engine and, by most accounts, it’s already highly regarded. Like regular Google, it features a basic and an advanced search.
From Google:
How does Blog Search work?
Blog Search indexes blogs by their site feeds, which will be checked frequently for new content. This means that Blog Search results for a given blog will update with new content much faster than standard web searches. Also, because of the structured data within site feeds, it is possible to find precise posts and date ranges with much greater accuracy.
How do I use Blog Search?
Just type the word(s) you want to search for in the text box and click “Search.” That’s all there is to it!
If you want more control over your search, click the “Advanced Search” link to the right of the search button. There you’ll find options to specify titles, authors, languages and more. Once you get your search results, there will be an additional link that allows you to switch between displaying the results with either the most relevant or recent results at the top.
Can I subscribe to search results?
Yes. At the bottom of each page of search results you can find several links, offering the top 10 or 100 results as either Atom or RSS feeds. Just grab the links from here and subscribe to them in the news aggregator of your choice and you will get updates whenever new posts are made that match your query.