SlimKim - 6:17 pm on Dec 2, 2010 (gmt 0)
Thanks for your replies (nice internal links to discussions). My all time adwords stats show over 900 million impressions and over 7 million clicks, and yet i am unable to test this for a couple of reasons. Let's just say the MWR is not measured (does not occur) on my web pages. And it's more complicated than that and gets confusing real quick, but i agree, it's very much worth testing and i suspect conversion carries forward throughout the chain of action(S).