If you don't have a clear strategy you may fail to win reward points, or end up with a bunch of points you can't do much with. (raytravelsfree.com)
However the report said there was little evidence that using incentives within the classroom encouraged anything other than letting badly - behaved children win rewards for mere attendance of lessons. (politics.co.uk)
Any trader has a chance to win a reward in relevant tokens. (links2exchange.net)