jeffgroovy - 8:57 pm on Aug 23, 2007 (gmt 0)

Here's some cold hard stats for you I see close to 10% CTR on paid ads averaged over the 07 YTD with a search engine project that I run which has over 250k queries per month. I think it would be higher more closely resembling the 16% number, but a large proportion of the searches done are with queries that have no paid ads at all.