RIBnet relies on Google advertising to cover the day to day running costs of the server - you will no doubt have noticed the adverts at the top and botom of most pages.
Google, as a third-party vendor, uses cookies to serve ads on RIBnet. These now include the
DoubleClick DART cookie.
Google's use of the DART cookie enables it to serve ads to individual users based on your visits here and other sites on the Internet.
You may opt out of the use of the DART cookie by visiting the
Google ad and content network privacy policy.
These two links have pretty good explanations, but let me know if you have any questions.