Good article, thanks gg. I know it's big nowadays, but not being a personal fan of the social networking scene, here's the part I find most interesing
"Marketers can pay to be in the right hand side of the Google page. That's paid advertising, also known as pay-for-click," said Fadi Shuman of Pod1 Media Solutions, a web development company.
"However, the ideal place to be is in the centre of the search results, and the way to achieve that is through search engine optimisation. To optimise your site so it's as highly visible to search engines as possible requires a number of different skills - editing content, adding links, etc."