I have been involved in search engine marketing since 1996 in some extremely competitive marketplaces such as real estate, retail, and online education and it is amazing to me how much search engines and search engine marketing has evolved over this time. The days of making small on page SEO changes to your site and submitting to Infoseek to see in 24 hours the change in positioning long gone. How about the days of getting into the Yahoo directory for free and it meant something? What about y