  With the emotions brought on by sports, I believe there is a niche market for sports-related cards. If I knew a Patriots fan, I would totally send a "Congrats on your team winning the championship" card. And, think of all the "There's always next year" cards you could send! You could have some that are genuine, and some that are totally smart-alecky. I would have sent more than my fair share of "Ha, ha! Told you my team is better! " cards after the MU win over Nebraska. Seriously, I should quit my job and develop this idea further. 
