How Google Rank Your Blog

Posted on 23rd March, 2007

Most search engine optimisation articles focus on issues that are applicable to general site when discussing about optimizing a blog for Google search engine. You may have read from my previous post that these issues include using the correct use of title tags, URL structures, post headings and so on.

However, it’s good to be aware that Google might use a slightly different criteria when it comes to ranking a blog at Google’s Blog Search.

Phillip Lenssen of Google Blogoscoped has written about a patent application from Google for ‘ranking blog documents’, filed in late 2005.

Google presents a couple of positive and negative quality indicators to help rank a blog and at the same time weed out spammers and splogs (aka spam blogs).

Google considers the following as the positive factors for blogs.

  • The popularity of the blog
  • The existence of the blog document in blogrolls
  • A high number of unique subscriptions
  • Use of tags
  • Emails or chat transcripts containing the blog URL
  • The blog or blog post’s PageRank (Google adds “a blog document (e.g., a post) may not be associated with a pagerank (e.g., when the post is new). In those situations, the new post may inherit the pagerank of the blog with which it is associated until such time that an independent pagerank is determined for the new post.”)

While these are considered as negative factors

  • New posts being published in short succession, which hints at automation
  • Duplicate posts in a blog
  • The use words or phrases that often appear in spam
  • Very similar length across different posts of the blog
  • Lots of links from this blog pointing back to a single website
  • Lots of ads

  • icy says:

    I have a question about this point:
    “Duplicate posts in a blog ”

    Does this statement applicable to different blog address? I’m migrating from previous blog to a new domain, shall i delete the old contents of my old blog?

    • Gaman says:

      I don’t think it applies to blogs from different domains.

      Besides, once the transfer is completed, you are going to delete the old blog don’t you? Even then, there’s no penalties for duplicate content.

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