Re: Need to know about search engine and Keyword marketing.
Pay attention to keyword ROI (Return on Investment). Not know much about search marketing, people may not realize that, even if the same kind of keywords, their return on investment is also a difference is there. This has to have a certain basic standards, but also in practice depends on our scientific monitoring and summarized. Sometimes, especially in commercial activities, the data more often than any of the concepts and theories are more convincing.
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