Google sued over click fraud
On June 24, Click Defense Inc. filed a lawsuit, which also seeks class action status, against Google claiming that the search engine giant has failed to protect users of its advertising program from click fraud.
As Nathan Weinberg of BlogNewsChannel points out, Click Defense's actions are curious given that they profit from click fraud–without it, they wouldn't have any services to sell. Publicity stunt or the act of a good samaritan looking out for AdWords clients everywhere?

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