Cookies in terms of the Internet are not your normal crumb dropping cookies. They do leave crumbs but the crumbs are snippets of information that web sites store in your web browser. These cookies can be used to remember who you are so that when you return to the web site, you don't have to re-log in, for example.
CustardList.com doesn't recognize me after customizing, does this have something to do with cookies?
In fact, this may have everything to do with cookies. If you have your browser set to not allow cookies, we will be able to store your settings on the server but we won't be able to recognize who you are.
Are cookies a security risk?
For more information on cookies, visit Cookie Central.