When the search engines were young even before Google existed there was a simple algorythm for SEO that was easily attainable. A top spot on Yahoo was not uncommon within a week or two for major keywords. Now with the competition between the search engines they are advancing their algorythms. I believe they will soon follow the intuitive autosuggest. No I'm not talking about that annoying voice on your phone. I think all search engines will either start to predict each users likings or fall beside Google.