There is a new website that can help you opt-out of targeted advertising. Very easy to use. The tool will automatically scan your browser for advertising cookies and then allow you to opt-out of some or all. Its FREE.
From their website:
"Welcome to the consumer opt out page for the Self-Regulatory Program for Online Behavioral Advertising. Our participating companies are committed to transparency and choice.
Some of the ads you receive on Web pages are customized based on predictions about your interests generated from your visits over time and across different Web sites. This type of ad customization — sometimes called "online behavioral" or "interest-based" advertising — is enabled through your computer browser and browser cookies. Such online advertising helps support the free content, products and services you get online.
Using the tools on this page, you can opt out from receiving interest-based advertising from some or all of our participating companies.
Find out which participating companies have currently enabled customized ads for your browser;
See all the participating companies on this site and learn more about their advertising and privacy practices;
Check whether you've already opted out from participating companies;
Opt out of browser-enabled interest-based advertising by some or all participating companies, using opt-out cookies to store your preferences in your browser; or
Use the "Choose All Companies" feature to opt out from all currently participating companies in one step. GO"http://www.aboutads.info/choices/