Google query - nice list of affiliate/Adsense sites
"They automatically receive your IP address when this occurs Other technologies such as cookies JavaScript or Web Beacons may also be used by the third party ad networks to measure the effectiveness"
Link to query
I did a search for "Adsense privacy policy generator", then stripped a line of unique text from the generated content. This results in a nice list of tons of sites who have used the tools, the vast majority of which are Adsense or Amazon affiliates.
To protect yourself from this type of snoopage, simply make you privacy policy noindex - or better yet, disallow it in your robots.txt.
Just thought I'd share
Free advice and information on my blog too!