First and foremost they provide the ability to log in to the site. Without a cookie it is very hard to remember who you are from one page to the next, which makes posting messages on the site almost impossible. This cookie is deleted when you close your browser window.
Secondly an optional pair of cookies are used to keep you logged in across visits to the site. This saves you logging in each and every time you come here. This only happens if you specifically select "Keep me logged in" when logging in. This cookie lives for up to a year.
The third and final use for a cookie (and probably the most important one) is to remember if you have clicked "Close this popup" on the cookie alert popup. Without that the popup would keep coming back, which would really annoy you. Again, this cookie lasts for up to a year.
Yes. All browsers provide a means to remove cookies. For instancein Google Chrome you select Settings from the menu, then find the "Show Advanced Settings". In there is a "Contrent settings..." which when clicked brings up a new box. The "All cookies and site data..." button then allows you to selectively delete any cookies you like.
There will be no consequences deleting the cookies for this site. All that will happen is that you will be asked to log in again and the cookie information popup will re-appear.
This is a report showing you the cookies set on your computer or device by this website.