I don't know how often I go by my routine, but I would say that if both forums had new posts, this is the 'priority' order I would use at the moment.

User CP (PM's then threads, as all the threads I post in appear in my User CP)
Staff Forum
World of EoFF
Big Cheese Hideout
Land of ExDee (xD)
Site Staff
Feedback Forum
General Chat
Warned Members List
The Lounge
Final Fantasy XII
Final Fantasy VII
General Final Fantasy
Anything else is generally random.