Mozilla seems to have issues with prizes they offer for stuff. I was supposedly selected to receive an FF4 t-shirt for my continued bugzilla participation and bug filing. I replied with the size (+ maybe design) I wanted and that was that :(
Hmm... Not I was responsible for that one as well - but send me an email to p {at} mozilla {com} with your shipping address and t-shirt size and I'll get you a t-shirt.
