With the recent Google Toolbar Page Rank update, I still haven’t really budged.
One site dropped from a 4 to a 3, others stayed the same, and a new site was given a 2. I can only seem to manage a steady PR of 3 which is somewhat frustrating but at least it’s workable in terms [...]

Google has changed the rules!
Google AdWords(TM) Announcement:
Affiliate Policy Change
Hello from the Google AdWords Team:
In January 2005, Google will incorporate a new affiliate
advertising policy that is designed to provide a better user
and advertiser experience.
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What is changing:
With this new affiliate policy, we’ll only display one ad per
search query for affiliates [...]

Just came across this freebie and giving it a whirl. I’m by no means a datafeed pro yet, but when something’s free and helps clean datafeeds - this has to be a good thing right?
Here’s the link, and thanks Chris for the tool!
Datafeed Cleaner