Supplemental Pages - How Google Beat Database Designed Web Sites!
Jeff Walters August 21st, 2007
Several years ago I developed a huge online book store with more than 15,000 books cataloged across the site. It was a difficult task written in PERL with a MySQL database. Yes, PERL, it was a while back. The site was developed with Google in mind. Indexes of books by category, author, type, style, etc. were developed to act as fodder for GoogleBot, Google’s search engine spider. This method worked extremely well for several years, until recently.
Google has developed what they refer to as “Supplemental Pages”. Or in SEO talk, pages of lesser value in the eyes of Google. Google claims that these “Supplemental Pages” are to provide supplemental search results for specific searches that Google doesn’t have a lot of results for. From what I can see, this is partially true.
In reality, it’s to decrease the value of these huge database driven Web sites. If you review your Google SERP, you’ll probably notice that non-supplemental pages often rank better than supplemental pages. It’s these results that draw me towards this article.
How Google determines what is considered a supplemental page is fairly simple. It’s based on the number of links to a page. Take your typical Web site design, for an example: head navigation, footer links, left side navigation elements. The pages linked in your header or footer will typically have more links pointing to them, as compared to other pages deeper in the hierarchy of pages in the Web site.
You may be questioning the value of PR at this point. PR has failed Google in some ways. Database driver Web sites have been able to drive up PR just by the mere size of the Web site; example: 100,000+ pages. Don’t misunderstand my point, it’s still a good indicator of the value of a Web page, just not a supplemental page.
Cheers,
Jeff Walters