[suggestion] shout spam filtering

[InspectorGadget]

This is most likely a problem on most servers, but there are a bunch of people that think its a good idea to spam up the chatlog with the same shout message every 30 friggin seconds. Is there a way to implement a shout spam filtering system that can block 2 of the same shout lines until a set amount of time has passed? It really gets annoying sometimes sitting in Port Jeuno and seeing:

Player: (Divine Might) (do you need it?) (can I have it?) (please) (please) (fun) (excitement) (you can have this!) (am I annoying yet???) (Help me out!)
30 seconds later....
Player: (Divine Might) (do you need it?) (can I have it?) (please) (please) (fun) (excitement) (you can have this!) (am I annoying yet???) (Help me out!)
30 seconds later....
Player: (Divine Might) (do you need it?) (can I have it?) (please) (please) (fun) (excitement) (you can have this!) (am I annoying yet???) (Help me out!)

repeat ad nauseam

my blacklist is getting pretty full with people that do this already.