I just got my MOTM shirt and I must say, it's freaking cool! My suggestion would be to also make the decals say MOTM with month and year. Would be a rare badge of honor! I would love to get them back dated for the other two times I have won.
Edit: And my dream came true! Now there are monthly MOTM special decals! Here are mine:
I've decided to stop using that domain because it appears few Members used it...Did you use it often?