Page Rank system even if the implementation of complex algorithms and not in a position with the tricks and manipulation that must be overcome. A number of webmasters and SEO professionals have several methods that benefit from the work of rating web pages on the client first developed in the search results.

Google has officially banned the use of some illegal techniques such as raising the left, next to the speakers, filling and internally generated scraper sites or pages. SEO sites or services, with the risk of the use of continuing the search index.

The threat from Google and other search engines is not just noise. Some SEO services company with clients who have ignored the ban, a severe punishment for illegal actions.

In 2005, Matt Cutts of Google says that the URL of the optimization company called Traffic Power and its customers are removed from the Google index for using illegal methods of optimization. Another famous case is, if Google in February 2006 cancellation of BMW corporate web sites and Ricoh Germany. BMW and Ricoh apologized to Google and they improve their sites. Return to the Google search index of their content. But the scandal still leaves a bad image and uncomfortable for both companies.

Based on the official guide and search engine optimization is not illegal, although the technique, in accordance with the ethics and rules implemented. This ensures that each location to receive equal opportunities in research, and assessment of the target, where the largest role in determining the ranking of a website is the quality and benefits for Internet users.