Robsp - 6:48 pm on May 21, 2004 (gmt 0)

Are you sure about this? It seems odd that Google would develop a per kw CTR tracker, and then only use it for ad position, not ad optimization.

I'm pretty sure about the ad position being keyword dependent. Just look in an adgroup and all average positions are different depending on competition, max cpc etc.

My question to you is how do you envision optimizing per keyword in an adgroup with lots of keywords?