te design and optimization guidelines for improving rankings that can put us on the right direction. Of course, the intelligent interpretation of these guidelines and the correct implementation of the solutions found is what makes the difference between two SEO companies. Search Engine Optimization is a relatively new industry that has been rapidly embraced by many self proclaimed "SEO experts", who've seen in it one of those rare opportunities to get rich fast. They started to charge huge up front amounts promising the world, but in the end delivering nothing, creating a huge wave of disappointment among business owners. The reason why so many people adventured themselves in the Search Engine Optimization jungle is because everything looks simple from the outside.Truth is that succeeding in this industry, like in any other industry, takes commitment, continuous training, permanent knowledge acquisition, and mastering all means of online communication. Actually it goes beyond that: it requires a deep understanding of the psychology of the online behavior and search patterns, careful analysis of website statistics and analytics, correct implementation of corrective actions, and creative approach of optimization strategies. The inability of many SEO companies to deliver the promised results, which had caused huge financial loses and disappointment among business owners, created a new trend in the search optimization arena: Performance Based Search Engine Optimization or the "Pay for Results, not for Promises" approach. According to this new, revolutionary approach of the SEO, a business owner who hires the services of an SEO company to achieve top rankings in Google, Yahoo, and MSN will pay only after the promised results are delivered, and NOT before. We witness a shift in power and control between the service provider and the beneficiary of the service. Performance Based Search Engine Optimization empowers those who use the services of an SEO company, and help them be in control of their finances. This new approach of SEO has already started to filter the participants in this industry, by eliminating those companies that do not employ ethical business practices and do not posses the knowledge and expertise to deliver what they promise, and by promoting the real masters of SEO. Performance Based Search Engine Optimization works like a natural selection process, where the weak ones will be automatically self-destructed and eliminated. Nobody can survive in business if revenues do not come in; if results are not delivered, the SEO company will not only be unable to record any income in its books, but will incur huge loses buy investing money in trying to implement an optimization strategy that does not work. The benefits of the Performance Based SEO are very tangible when it comes to ROI. SEO used to be a huge investment for businesses, but used to bring back in the investors' pockets very low returns, if any at all. SEO was in many cases a rather huge expenditure than a business investment. The difference between expense and inve