Relevant Ads, Quality Advertisers
Google measures the performance of the advertising it delivers. By providing a tool to more accurately measure the performance of the ads we deliver, Google (and advertisers) will be able to improve the quality and relevance of the ads that you see.

Your Privacy
To measure performance, Google uses small strings of text (known as cookies) that are placed on your computer when you click on ads. Cookies typically remain active on your computer for about 30 days. If you visit certain pages of the advertiser's website during that period, Google and the advertiser will be able to tell that you saw the ad delivered by Google.

If you'd like to know more about how Google handles information gathered from the use of cookies, please read our privacy policy. If you want to disable the use of cookies, you can reset your browser to refuse all cookies or to indicate when a cookie is being sent. Be aware, however, that some websites may not function properly if you refuse to accept cookies.

Third party vendors, including Google, show your ads on sites on the internet.

Third party vendors, including Google, use cookies to serve ads based on a user's prior visits to your website.

Users may opt out of Google's use of cookies by visiting the Google advertising opt-out page.

Interest-based advertising delivered across the Google Display Network uses the DoubleClick cookie. In addition to interest-based advertising, this cookie is used for other purposes such as controlling how frequently users see individual ads, and providing advertisers with aggregate reporting statistics such as how many people saw their ad.


This cookie contains a randomly generated 18 digit ID number that uniquely identifies a web browser on a specific computer, but isn't used to identify an individual person. If you use multiple browsers and a different computer at home and at work, each one has a different cookie.