Cookies consist of pieces of text, sometimes including unique identifiers, that are sent by web servers to web browsers, and which may then be sent back to the server each time the browser requests a page from the server.
Cookies can be used by web servers to identity and track users as they navigate different pages on a website and to identify users returning to a website.
Cookies may be either "session" cookies or "persistent" cookies. A session cookie will expire at the end of the user session, when the web browser is closed. A persistent cookie, on the other hand, consists of a text file sent by a web server to a web browser, which will be stored by the browser and will remain valid until its set expiry date (unless deleted by the user before the expiry date).
Cookies can be "technical" coolies, or "profiling" cookies for marketing purposes (eg. targeted advertising).
Cookies on this website
In this website we use only technical cookies, both session cookies and persistent cookies.
Cookies do not contain any information that personally identifies you, but personal information that we store about you may be linked, by us, to the information stored in and obtained from cookies.
Most browsers allow you to refuse to accept cookies. For example:
- in Internet Explorer you can refuse all cookies by clicking "Tools", "Internet Options", "Privacy", and selecting "Block all cookies" using the sliding selector;
- in Firefox you can block all cookies by clicking "Tools", "Options", and un-checking "Accept cookies from sites" in the "Privacy" box.
Blocking all cookies will, however, have a negative impact upon the usability of many websites.
You can also delete cookies already stored on your computer. For example:
- in Internet Explorer, you must manually delete cookie files (you can find instructions for doing so at http://support.microsoft.com/kb/278835);
- in Firefox, you can delete cookies by, first ensuring that cookies are to be deleted when you "clear private data" (this setting can be changed by clicking "Tools", "Options" and "Settings" in the "Private Data" box) and then clicking "Clear private data" in the "Tools" menu.
Obviously, doing this may have a negative impact on the usability of many websites.