What are cookies?
A 'cookie' is a small piece of information sent by a web server to store on your computer, so it can later be read back from your hard disk.
What are they used for?
Cookies are lines of data sent to an Internet user's computer by some Web servers when the user's Web browser visits the server. These cookies remain in the user's computer and can thereafter be read and updated when the browser requests pages from the same server. Cookies are used for making it easier for users to access their favorite Web sites without having to go through a lengthy process of identifying themselves every time they visit. The most recent versions of the two main browsers, Navigator and Internet Explorer, let users chose to be warned before receiving cookies from websites, or to block them completely. If you want to see what information is stored in your cookie file, use a text editor or a word processor to open a file called cookies.txt or MagicCookie in your browser's folder or directory.
How Do They Work?