Tuesday, March 20, 2007 10:38 AM/EST

How Google Ranks Blog Search Results

A recently published patent reveals the basic rules governing results in Google Blog Search, said the Google Operating System blog.

The patent, filed in September 2005 and published last week, reveals that Google uses -- or at least planned to use -- the following indicators to rank blog search results:

Positive signals	Negative signals (spam signals)
links from blogrolls (especially from high-quality blogrolls or blogrolls of "trusted bloggers") links from other sources (mail, chats) using tags to categorize a post PageRank the number of feed subscriptions (from feed readers) clicks in search results	posts added at a predictable time different content between the site and the feed the amount of duplicate content using words/n-grams that appear frequently in spam blogs posts that have identical size linking to a single web page a large number of ads the location of ads ("the presence of ads in the recent posts part of a blog")

Bill Slawksi at SEO by the Sea published a bit about the same patent earlier last weekend.

One of the patent authors, Jason Goldman, was the former product manager for Blogger, but left Google in mid-2006. He recently began work as director of product strategy for Obvious, the makers of ~~the most obnoxious app in the world~~ Twitter.

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Comments (1)

Nick :

How might Google figure out how many feed subscribers you have to your site? Do they simply look at who subscribed in their own Google Reader, or do they crawl large aggregation sites such as feedburner and technorati to see the popularity of a certain feed?

-Nick
http://adgridwork.com | a free text link and advertising exchange for bloggers

Posted by Nick | March 20, 2007 1:56 PM

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