Hi

I think that rewards like implemented at http://www.quakelive.com/#profile/awards/Trajan would be very useful for generating activity.

What do you think about it?

Sure but why get stuck with the one option? Points allow you to generate activity for the cost of the electrons but rewards consisting of more dense matter cost real money. Points are easy to package and ship to the winner! :>) Even if you covert points to cash, you can still get it to them electonically; there's just so many options with the little buggars!