Gamespy is shutting down on May 31'st so this will affect older PC Call of Duty titles like the Original and Sequel which still have thousands of players playing them daily.
There's also Soldier of Fortune 2 which is still popular.
So what is going to happen to these communities? Please choose to support your active game communities Activision. I know it will require more money and effort than I can imagine, but they are part of your heritage. Please support your best online pc shooters that started it all.