I posted this on my blog and wanted to get everyones opinion on this (http://palatnikfactor.com/2011/06/07/seo-correlation-between-code-and-search-engine-rankings/)
I’m always looking to see what top ranking websites may be doing to get the rankings they do. One of the tasks of any SEO I guess is to really analyze competitors, right?
I want to really stress that what I am writing here is completely opinion based and have not (due to time) validated this correlation enough but would like to get the discussion started. Nevertheless, I did enough research to see that there may be a correlation between code validation and top ranking websites, at least for certain queries where the number of real big players/brands is limited or non-existent.
So, what do I mean? http://validator.w3.org/ validates code on websites. This tool shows you errors and warnings that may be making it harder for search engines to crawl your website. Looking at top competitors for certain niches, I was surprised to find that top sites had very few errors compared to 2+ page rankings. That’s not to say that all the sites on the first page had fewer errors (cleaner code) than websites in the 2<sup>nd</sup> page plus. However, again, top ranking websites for keywords that I was looking at had cleaner code which may have a correlation in regards to organic rankings.
What’s your take? Does this have any effect in regards to SEO?