Google has introduced a new extension for Chrome web browser that prevents advertisement services from getting information in order to aim ads at users.
Keep My Opt-Outs is for people who aren't comfortable with personalization of the ads they see on the web. When you install Keep My Opt-Outs, your experience of online ads will change, you'll be seeing the same ads repeatedly, or see ads that are less relevant to you.
Keep My Opt-Outs is available as open source at: https://code.google.com/p/chrome-opt-out-extension/.
Learn more about Keep My Opt-Outs here.