Green_Grass - 7:07 am on Feb 27, 2007 (gmt 0)

"My thinking is that Google gives the highest paying bidders the top positions"

Not really.. IMO, Google will place the ads with the maximum aggregate of ( CTR X CPC ) in top positions. They want to maximize your and their revenue. So you could land up with most of the MFA's ( if you are not vigilant).

Generally MFA's will outscore genuine high EPC ads because their higher CTR will make more money for Google.

Sad but true.

You need to rethink your strategy and combine it with filtering and careful tracking to be successful.

At times, your strategy will work very well...but for me, there have been major problems with this approach. I now try and find a balance.