What Are Cookies
For more general information on cookies see the Wikipedia article on HTTP Cookies.
You can prevent the setting of cookies by adjusting the settings on your browser (see your browser Help for how to do this). Be aware that disabling cookies will affect the functionality of this and many other websites that you visit. Disabling cookies will usually result in also disabling certain functionality and features of the this site. Therefore it is recommended that you do not disable cookies.
The Cookies We Set
Forms related cookies
When you submit data to through a form such as those found on contact pages or comment forms cookies may be set to remember your user details for future correspondence.
Site preferences cookies
In order to provide you with a great experience on this site we provide the functionality to set your preferences for how this site runs when you use it. In order to remember your preferences we need to set cookies so that this information can be called whenever you interact with a page is affected by your preferences.
Third Party Cookies
From time to time we test new features and make subtle changes to the way that the site is delivered. When we are still testing new features these cookies may be used to ensure that you receive a consistent experience whilst on the site whilst ensuring we understand which optimizations our users appreciate the most.
Hopefully that has clarified things for you and as was previously mentioned if there is something that you aren't sure whether you need or not it's usually safer to leave cookies enabled in case it does interact with one of the features you use on our site.