Organic Response

Its pretty much an accepted fact among SEOs and SEO minded web designers that the search engines, especially Google, have a soft spot for the WordPress blogging platform.  We all know that the easily updated nature of blogs keep the search engine spiders frequently coming back for fresh content, but what exactly is better about WordPress compared to Blogger or Typepad, or any other blogging software.  Something to do with the ease in which pages can be tagged with appropriate keyword labels…right?

Does anyone have a more precise explanation for this?  I was recently asked by a web designer colleague if I new of any studies or proof of WordPress being fundamentally ideal for optimization.  He is in the process of perfecting a comprehensive web site analysis package that takes into account everything from user experience, to SEO, to conversion optimization.  The company that effectively incorporates the principles of WordPress into their web design efforts will present a very marketable product…. Any thoughts?