We do not ever distribute any personal information whatsoever. If you contact us, you may be added to our newsletter, but you can unsubscribe with the click of a mouse.
However, Google and some Third Party plug-ins, like Paypal, may track your ISP number in regards to serving you targeted ads or remember if you left any items in your shopping cart and things like this, but as far as we understand they do not necessarily know who you are or store your personal information either.
This is what Google has to say about it:
Interest-based advertising will allow advertisers to show ads based on a user's previous interactions with them, such as visits to advertiser website and also to reach users based on their interests (e.g. "sports enthusiast"). To develop interest categories, we will recognize the types of web pages users visit throughout the Google content network. As an example, if they visit a number of sports pages, we will add them to the "sports enthusiast" interest category. To learn more about your associated account settings, please visit the AdSense Help Center at http://www.google.com/adsense/support/bin/topic.py?topic=20310.
For more information about interest-based advertising, you can also visit the Inside AdSense Blog at http://adsense.blogspot.com/2009/03/driving-monetization-with-ads-that.html.
We appreciate your participation and look forward to this upcoming enhancement.
The Google AdSense Team
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