A cookie is a small text file that a website saves on your computer or mobile device when you visit the site. It enables the website to remember your actions over a period of time.
You can control or delete cookies as you wish. You can delete all cookies that are already on your computer and you can set most browsers to prevent them from being placed. If you do this, however, you may have to manually adjust some preferences every time you visit a site and some services and functionalities may not work.