Contacting yahoo and google

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If a merchant feels they've been victimized by click fraud, "We would absolutely encourage them to contact us," says Yahoo spokeswoman Gaude Paez. Not only is Yahoo interested in investigating any such claims, but advertisers play a key role in helping the engine guard against click fraud, she says.

Yahoo has three layers of defense against click fraud, she explains. The first is a series of thousands of software filters that have been written to filter out any suspicious activity, for example, "clicks that are repetitive within a certain time frame." Its second line of defense is a team of data analysts working in combination with pattern recognition technology.

"The third layer of defense really comes from the ongoing dialogue with advertisers," Paez says. "Advertiser input helps us build additional filters for our system to protect advertisers from whatever type of click fraud they may have encountered."

Merchants can contact their account rep or use the Yahoo customer service page. Yahoo will ask the merchant for their Web log files, Paez says. "We'll take a look at it, and if we determine that there is click fraud, or activity that's suspicious that we shouldn't be charging, we will refund the advertiser."

It's not just the big accounts that get service, she says. "We have often spent our time looking into the Web logs of small advertisers. Even something like a $20 in a month is actually a significant spend for some advertisers, so we are completely agnostic about the size of advertisers. Because if we can find a pattern, we want to filter against it."

Merchants buying PPC advertising from Google also have recourse. "If an advertiser feels that there may be some invalid click activity in their account, we encourage them to contact us," says Google spokesperson Barry Schnitt. He refers merchants to a help page to begin the reporting process. He notes that additional information about Google's response to invalid clicks can be found here and here.

Furthermore, Schnitt notes, it's important that merchants know "we take this seriously and have teams and technology working proactively to prevent invalid clicks from impacting advertiser accounts."

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Completely avoiding click fraud would not be easy but what you can do is take a step to analyse all the log and history of all clicks and compare them to days and weeks and look for some unprecented highs and lows and if something suspicious is there contact yahoo and google immediately . Click fraud is getting to be so pervasive that search engines such as Google have created teams specific to combating click fraud. Since 95 percent of Googles profits are derived from advertising it is important that they keep their customers happy, so Google offers refunds to advertisers when click fraud has been discovered.