Cookies consist of small files, often 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 “persistent” cookies or “session” cookies. A persistent cookie 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). A session cookie, on the other hand, will expire at the end of the user session, when the web browser is closed.
We use both session cookies and persistent cookies on this website.
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.
We may use the information we obtain from your use of our cookies for the following purposes:
to recognise your computer when you visit our website
to track you as you navigate our website, and to enable the use of the some of the features on our website (such as our shopping cart, Q&A system, and blogging and commenting system)
to improve the website’s usability
to analyse the use of our website
in the administration of this website
to personalise our website for you
When you use our website, you may also be sent third party 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. If you block cookies, you will not be able to use many of the features of this website.
You can also delete cookies already stored on your computer. The method of doing so will depend upon your web browser. Instructions are available at the following URLs.