If Facebook games aren't annoying enough for you already, here's a new addition to the genre.
Chat Fu is a fighting game played using words. If you can trick your opponent into using a word that the game designates, you win a hit. The twist is that opponents may not know they are being played.
To the other player, Chat Fu conversations appear in the Facebook private messages box. Once the player has been punked, there's an option to send them a link to the game.
"It's amazing how fun tricking your friends can be," said Justin Kwok, president of the game's developer Blot Interactive. "Especially when they see it posted on their wall and try to get back at you."
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