Cookies are small files stored on your computer by your web browser (such as Internet Explorer or Firefox) at the request of a site you're viewing. This allows the site you're viewing to remember things about you, such as your preferences and history or to keep you logged in.
Cookies may be stored on your computer for a short time (such as only while your browser is open) or for an extended period of time, even years. Cookies not set by this site will not be accessible to us.
Here is a website explaining myths about cookies that you may believe: Cookie Myths
Managing your cookies and cookie preferences must be done from within your browser's options/preferences. Here is a list of guides on how to do this for popular browser software: