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 this site. Therefore it is recommended that you do not disable cookies.
The Cookies We Set
Site preferences cookiesIn 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.
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.