Across the United States, 2,693 people have received a letter in the last few months, which identified a debt and read: "You are no longer under any obligation to settle this account with the original creditor, the bill collector, or anyone else." This is the work of the Rolling Jubilee project – a non-profit initiative which buys personal debt for pennies on the dollar in the secondary market (where debt is sold to companies who then resell i