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Click fraud is a type of fraud that occurs on the Internet in pay per click (PPC) online advertising. In this type of advertising, the owners of websites that post the ads are paid based on how many site visitors click on the ads.
The differences in the presentation of reviews on Review Centre and the structure of that information in comparison to its competitors have been diminishing and may explain why Review Centre operates as much of a community site than Ciao or Epinions .