F told me about a new protest technique hatched by the Occupy Wall Street types: using the pre-paid return evelopes enclosed with credit card offers to send messages back to big banks. I have decided to do this, although I harbor no illusions of changing the financial system. My dream: a mailbox with fewer credit card offers in it.

If I can help to keep the US Postal Service solvent on someone else’s dime, that’s not a bad outcome either.