Letters

Always write angry letters to your enemies. Never mail them.

~ James Fallows

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I don't do this, but maybe I should. I would want to stress to anyone thinking of starting this practice, that writing angry emails and not sending them is much riskier. If you accidentally hit "REPLY" or worse yet, "REPLY ALL" -- well, we've all heard stories about those sorts of mishaps.

I also wouldn't encourage people to write angry postcards. I think it's more difficult to be angry on a postcard. And you don't have as much space for the anger.