projector writes: The Guardian are crowd sourcing the investigation of 700,000 pages of UK MPs expenses data. Readers are being invited to categorize each document, transcribe the handwritten expenses details into an online form and alert the newspaper if any claims merit further investigation. "Some pages will be covering letters, or claim forms for office stationery. But somewhere in here is the receipt for a duck island. And who knows what else may turn up. If you find something which you think needs further attention, simply hit the button marked "investigate this!" and we'll take a closer look."