Microsoft Windows Refund Program @ ThinkPenguin.com

Did you inadvertently purchase unwanted proprietary software? Show your support for free software and get a $10 store credit from ThinkPenguin.com. Simply submit your unused license key for any recent Microsoft Office (2007, 2010) or Microsoft Windows product (XP, Vista, and 7) and receive a $10 store credit. Submissions should be sent to Penguin Support with a request for a $10 credit. Limit one $10 credit per person. Offer expires 12/31/2011. Offer may only be used on future orders.