Micropersuasion posted about setting up keyword search RSS feeds to blogs of a certain level of authority on Technorati - and this is open to anyone, even those without an account.

"Where it really gets interesting is what you can do with these feeds. Starting today you can now set up sophisticated keyword feeds that are limited to blogs with a certain level of authority. This essentially strips out most spam blogs. All you need to do is set up the right search on Technorati and then click on the RSS icon to the right of the search (see screen grab below). For example, using this technique you can set up a search for Yankees only within blogs that have a lot of authority and get an RSS feed that delivers these results.

I did just that for "Web Analytics"  http://feeds.technorati.com/search/web+analytics?language=n&authority=a7

Used high authority blogs but wondered if I should have used blogs with "some influence" as I might have picked up more information.  We’ll see.