A flaw in Google's new Interface "Google Instant" may be causing, "Adwords advertisers unwanted increased spends," reported by some users on help forum --
"when people double click on the entry they're sent to a PPC ad if there's one occupying the top spot over the organic listings. If anyone double clicks when instant is running the top ad automatically loads costing the advertiser the price of that ad - this page load mayn't be what the searcher wants and bounce rates must be increasing for all top position advertisers."
People on Google Help Forums are asking "how to turn the blue arrow of?" The best answer is "Go to Google search settings, in Google preferences go to Google instant and select - Do not use Google instant. This should take care of that annoying arrow," posted by anniegrc76.
But to stop this impacting advertisers everyone needs to turn it off - or in other words Google needs to correct this.