This article describes what "cookies" are, how they are used,
and how to manage them in Firefox. What is a cookie? A cookie is
information stored on your computer by a website you visit. In
some browsers, each cookie is a small file but in Firefox, all
cookies are stored in a single file, located in the Firefox
profile folder. Cookies often store your settings for a website,
such as your preferred language or location. When you return to
the site, Firefox sends back the cookies that belong to the
site. This allows the site to present you with information
customized to fit your needs. Cookies can store a wide range of
information, including personally identifiable information (such
as your name, home address, e-mail address, or telephone
number). However, this information can only be stored if you
provide it - websites cannot gain access to information you
didn't provide to them, and they can't access other files on
your computer. By default, the activities of storing and sending
cookies are invisible to you.