It's extremely annoying that the server wide messages use the same window that the gold spammers use. Whenever there is an important message about server maintenance or some other such event I'm completely caught by surprise because I can't see the message, it was drowned out by "Buy gold from me fast and easy bla bla bla". It just seems like I'm doing my thing then all of a sudden I'm logged out and it makes me EXTREMELY angry as a player to be caught in an awkward area like that.

My suggestion is making a separate UI window specifically for server to player messages. Something that will flash in a little window on the screen when a warning is issued rather than just throwing it into the chat box where it will be lost forever.