http://www.emarker.com
Click on rebate information!

I got the email last night. Oh well, I bought an emarker, but never really used it. Guess nobody did! They send you $25 for sending them back your emarker, no receipt needed. And you get to keep the cradle, which is essentially a fancy USB extension cord. I leave mine sitting on my desk to plug joysticks in, whatever.

Ryan