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Old 05-06-2005, 06:42 PM  
Theo
HAL 9000
 
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Join Date: May 2001
Posts: 34,515
over 1.2% and you wont run to problems of slowing your ads
monitor extremely high ctr for fraud or kws that shouldnt get many searches and clicks,but they do.

overall it's an issue of ROI and not CTR if you ask me.
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