&quot;Negative lottery as a service&quot;<p>Customers (drawn from the rational HN crowd) pick lottery numbers and pledge <i>not</i> to play the lottery for a period of time (selectable from a really cool animated dropdown). At the end of the period we mail them the amount saved on tickets or, in the unlikely event the numbers actually came up, lost by not playing.<p>As premium paid service, infinite period of time with physical printed yearly reports and cool framed diplomas to hang on the wall.