James_WV - 1:01 pm on Oct 2, 2009 (gmt 0)

>>But this part intrigues me:
>>consumers exposed to a display ad were more likely to visit >>the advertiser's site than users who never saw the ad

>>How can we measure this residual effect?

Met with a Google account optimizer a couple of weeks ago, by the end of the year Google should be brining out a report which measures views through to conversions