'Cookies' are small pieces of information that are stored by your browser on your computer's hard drive.
They make it possible for us to identify registered users without needing to ask for registration details every time you access one of our sites. Using cookies makes accessing our sites more convenient as you don't need to enter your email address and password each time you enter.
If you are concerned about cookies, you can turn them off in your browser. However, if you do this please note that some areas of the site may not work properly.