The early development of the Internet, search engines only as a technical application for the site to provide information retrieval services. With the rapid development of networks, search engines gradually find their way of life - keyword advertising. Earlier, tens of thousands of small and medium domestic used this approach to their products, services, information on the major search engines rank search results front, and thus embarked on a journey of network marketing. The search engine seems to draw from also keyword ads on the equal sign, in the people a deep impression imprint imprinting. As everyone knows, with the networks and the development of search technology, today's search engine marketing and image than in the purchase of search keywords, has undergone a qualitative leap,...