Amazon's offering students with a valid .edu email address a free year of Amazon Prime, which grants buyers free two-day shipping on any item they buy, no minimum purchase required, and some exclusive email deals.
Amazon asks you to provide a college and major with your student sign-up, so they're not just looking for an .edu address. Still, these things tend not to involve multi-national investigation, so if you're loosely affiliated with a field of study at a university, you should be able to move ahead. Anyone who's not a student can still get a 30-day trial of Amazon Prime to kick the tires a bit.
Amazon Student [via #tips]