Monday, May 21st, 2007...12:05 pm
How Does Google Blog Search Determine Blog Rank?
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On a whim I went and checked out how my blog ranked in Google Blog Search and was surprised to find I didn’t rank nearly as well for the terms I normally rank for. I don’t use Google Blog Search so I wasn’t aware that its ranking mechanism was different from Google Web Search.
After a little digging I found a summary of the factors Google takes into consideration when ranking blogs. The following information came about after an analysis was done on patent documents filed by Google, which relate to blog ranking.
Positive factors affecting blog rank:
- How many RSS subscriptions there are to the blog.
- How often people click on a link to the post in search results.
- How many blogrolls the blog is in.
- How many â€śhigh qualityâ€? blogrolls the blog is in.
- If the blog offers visitors the chance to tag posts, whether people are tagging them.
- References to the blog by sources other than blogs.
Negative factors affecting blog rank:
- If new posts appear in short bursts or at predictable intervals.
- If the content of the posts doesnâ€™t match the content of feeds from the posts.
- If the content includes a lot of spam related keywords.
- If a lot of content is duplicated in multiple posts from a blog.
- Whether posts are the same size, or roughly the same size.
- Link distribution of the blog.
- If posts primarily link to one page or site.
As you can see, instead of simply filtering out pages that don’t belong to blogs and using their default ranking algorithm, Google uses additional criteria to rank blog posts. They seem to be going the extra mile to make sure the most relevant and authoritative posts make it to the top of the search pile.
Andy Beard has an excellent in-depth analysis of Google’s blog ranking criteria if you want to do some further reading on the subject.