Google recommends this policy be published for sites serving ads from the Adsense program:
* Google’s use of the DART cookie (DoubleClick DART cookie )enables it to serve ads to your users based on their visit to your sites and other sites on the Internet.
The Network Advertising Initiative, or NAI, suggests the following language for data collection of non-personally identifying information:
We use third-party advertising companies to serve ads when you visit our website. These companies may use information (not including your name, address, email address, or telephone number) about your visits to this and other websites in order to provide advertisements about goods and services of interest to you.
We may collect email addresses and names of visitors that opt into our newsletter email list. We do not sell that information or loan it to 3rd parties to send you any email offers of any sort. We reserve the right to send you offers directly that we think are appropriate to our subscribers. You can choose to opt-out of our lists at anytime.
We do not use your email, address, or telephone number if you voluntarily give it to us, to target you with advertising outside of what Google does during it’s regular operation with Adsense and Adwords.