Perhaps it was one of the PBO - TPR FT bus riders?
http://www.flyertalk.com/forum/Forum39/HTML/000472.html
Buy a refundable ticket online and get the miles. Does it then become fraud if the person refunds the ticket yet keeps the miles? What if you did it once? What if you did it every day for 3 months? When does it become a criminal case?
In the US my guess it would be never, but I remember a thread (cannot find) on the QF board where at least one bus rider had his account suspended!!!
rich