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percentages - 1:10 pm on Dec 5, 2004 (gmt 0)
The Advertisers may know they are being overcharged because of click fraud, but, right now most of them don't care. Although this may seem absurd, it really isn't, and Google knows it! Click fraud will not bring Google or AdSence down, competition for market share will......and, that is Google's biggest fear!
Google currently have a good brand that can withstand an element of fraud with its advertisers.