Yahoo's Tim Converse Colors SEOs

Tim Converse, the "spam fighter" at Yahoo, has a fun post he named Search engine optimization (SEO) from black to white. He tries to add nine colors between black and white. For example, a "dark gray" SEO is an SEO that "collects (aka steals) random text from other sites, and uses it to create thousands (or millions) of pages targeting particular queries. The pages have nothing original of value, but do have ads." The new shades of black and white include; Dark inky black, Charcoal, Dark gray, Slate gray, Gray, Light gray, Off-white, White, and Luminescent pearly white.