MR> I think the incentive would have to be a little bit higher for me. Too MR> much T-shirts, I'd guess. But you're right! We don't complain about MR> free T-shirts :)
For me the T-Shirt was just an extra. The satisfaction of completing the course and reaching the rank of "Sage" was enough of an incentive in itself. But I did not decline the T-shirt, especially since they managed to have it delivered on my birthday. ;-)