Seo stands for search engine optimization and refers to the process of getting your site ranking high in all of the mayor search engines for a chosen target group of keywords. The main goal of search engine optimization is improving the revenue from the web site by getting a higher volume and or more targeted traffic. There are many seo techniques. In general, these techniques can be categorized as On-Page Optimization, On-Site Optimization, and Off-Site Optimization. We can differentiate between two kinds of search engine optimization specialists, black hat and white hat. Where blackhat seo’s use techniques that are generally considered spam, questionable or prohibited (according to the guidelines); the white hats stick to the rules set by the search engine companies.