Google announced they added a new filter that helps you find "specialized blogs" on any topic you can imagine.
Here is how it works. Go to Google, search for a topic, then click on the "blogs" filter on the left side (note: it might be hidden under a "more" link). Then when the page filters to blogs, click again on the left side, this time where it says "homepages." That filter will show the most important and relevant blogs on the search query you entered.
Here is a screen shot:
How is this useful? Well, for a searcher it is obvious, but what about an SEO? Finding blogs in a niche can sometimes be hard. Google has just made it so much easier. You can now find blogs in the aerospace engineering field or duck hunting field with ease. Form a relationship with those bloggers and garner links from them over time.
Tedster said in a forum thread, "This is pretty handy. I've already found a few sources I didn't know existed in various verticals I watch."
Forum discussion at WebmasterWorld.


Comments:
John Henderson
08/31/2010 04:17 pm
This has been around for a while now, although I am not sure how long. It is okay for some quick research but it tends to list a bunch of junk-blogs that are obviously only used by SEO companies as link farms. However, if you take the time to wade through the junk, there is definitely some value to be found.
Michel
08/31/2010 05:15 pm
Yes this was added by the end of July, had a post about it to.
Tim Cohn
08/31/2010 08:11 pm
Log out of your Google account to get a fresh set of search results otherwise you'll of sites you have already seen.