Some of the ads you receive on Web pages are customized based on predictions about your interests generated from your visits to different Web sites. This type of ad customization is sometimes called "online behavioral" or "interest-based" advertising. Such online advertising helps support the free content, products and services you get online.
The Digital Advertising Alliance's consumer choice page lists participating companies that provide transparency and choice with regards to targeted advertising. Click the Read more link to go to the site and opt out!