Search Engine Marketing is a form of Internet Marketing that seeks to promote websites by increasing their visibility in the Search Engine results pages and has a proven Return on Investment. There are two factors involved when it comes to search engines and their algorithms: On Page Factor and Off Page Factor. On page factors is optimization done on the Page, like the modification of html code, title, Meta, Alt and other tags helpful for SEO. Off page factors are optimization done off the Page, like getting relevant links from other sites, link exchange with quality relevant sites, choosing relevant anchor text from the perfect location on the different pages of different sites, etc.