This is pretty much the same conclusion Ilya Grigorik (founder of postrank, which was recently bought by Google) came to: http://vimeo.com/22513786 http://vimeo

This is pretty much the same conclusion Ilya Grigorik (founder of postrank, which was recently bought by Google) came to: http://vimeo.com/22513786 http://vimeo.com/22513786