Cookies are little files created by websites to help them store information about your visit on your computer. They act as a kind of short term memory.
New UK regulations coming into force in May 2012 require that you get a say whether or not a website can create these cookies.
The information gathered by these cookies is totally anonymous and is not shared with any third party organisations, including Google themselves. This information cannot be used for promotional, advertising or customisational purposes.
If you would rather that analytical cookies were disabled on this (and any other website that you visit) you can download and install a free plugin for your browser here.