About two years ago, Google launched a browser plugin that allowed users to opt out of the company’s ads tracking mechanism. By tracking your moves around the Internet, Google – and most other advertising companies – can ensure that you see relevant ads (read: ads you are likely to click) on the pages you visit. Today, just a few hours after Mozilla announced its plan to offer a do-not-track tool for Firefox, Google announced a new Chrome plugin that allows users to permanently opt-out of personalized ads and data tracking from not just Google, but a wide range of other online advertising companies as well.