Interest-based advertising...interesting

I recently received an email from google about interest-based advertising. Interest-based advertising will allow advertisers to show ads based on a user's previous interactions online.

The email states:

"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."

Question "well how?". Answer "Cookies"

Google adsense publishers will drop crumbs into the computer of every person who clicks on an ad on their page . Publishers will have to inform their visitors of this new "interest-based advertising". How many clicks do publishers feel they will get with the following statements:

• Google, as a third party vendor, uses cookies to serve ads on www.com
• Google's use of the DART cookie enables it to serve ads to your users based on their visit to your sites and other sites on the Internet.

Google does however allow users to opt out but the damage is done if you ask me. I don't see the benefit to the user. For me it's too much that even my "interests" will be free for google to exploit.

However it is interesting in a Orwell "1984" sort of way.

:P