Cookies are very small files that are stored on your computer when you visit most websites. They are sent back and forth between the website’s server and your Internet browser to allow the website to remember actions you’ve made.
Most Internet browsers allow users to control the acceptance of cookies via the browser’s settings. Visit allaboutcookies.org to find out how to configure these settings on a number of major browsers.
You can opt out of being tracked by Google Analytics across all websites by installing Google’s opt-out browser add-on.