Search engine optimisation or SEO, has become a huge priority for marketers over the last few years. It’s easy to see why—higher search engine rankings result in more traffic, more leads, and higher sales and conversions. But how, exactly, does it work? How does adding keywords to various site elements improve your chances of ranking well in search engines?
Website owners recognized the value of a high ranking and visibility in search engine results, creating an opportunity for both white hat and black hat SEO practitioners. According to industry analyst Danny Sullivan, the phrase "search engine optimization" probably came into use in 1997. Sullivan credits Bruce Clay as one of the first people to popularize the term. On May 2, 2007, Jason Gambert attempted to trademark the term SEO by convincing the Trademark Office in Arizona that SEO is a "process" involving manipulation of keywords and not a "marketing service."