Students: Get 8 Windows 7 Professional Keys for $19

You can join the Association for Computing Machinery (ACM) for a mere $19, and as part of the membership you get access to the full MSDNAA catalog. In that catalog are both 32-bit and 64-bit versions of Windows 7 in English, French, Chinese, and Spanish. Each version and language is accompanied by a unique product key that works with any version and language of Windows 7 Professional (ex. a 32-bit French product key can be used on a 64-bit English install). In all that means you get a total of 8 product keys.