Google Advertising Cookie Opt-out Plugin: Via Google.

Save your opt-out preference permanently

With this browser plugin you can permanently opt out of the DoubleClick cookie, which is an advertising cookie that Google uses.

The plugin lets you keep your opt-out status for this browser even when you clear all cookies.

Don't want to opt-out?
Visit the Ads Preferences Manager to edit the preferences that are associated with this cookie.

Open source
The Google advertising cookie opt-Out plugin is available as open source on our project code site.

Read Original Article (Via Google.)