What does this mean?

Browse board with cookies?
Clicking yes will use cookies to keep your id for this session. Clicking no will send it through the links. (Selecting no may cause problems with proxies)

Since I'm at school I have checked that I have to log in everytime I visit VB-World. Doesthe above mean that I don't have to log out and all cookies are cleared anyway when I close the browser?

Thank you