how did they know?

[h]

got this in my in box this morning - how did they know?

http://www.perfectcollectibles.com/simpsonsbeer/index.cfm?action=promo&pc=P2PSBO&acode=984042C8&

hey, those sneaky bastards offer it for $5 less if you close the window, but try to add a 3 stooges one too - they have their marketing degrees i think...