Grid.org

Amazon is inviting students, educators and researchers to apply for
grants that will give them free access to the company's hosted
computing services.

...

Amazon services available to people applying for the teaching grants
include the Amazon Elastic Compute Cloud, Simple Storage Service,
SimpleDB database service, Amazon Simple Queue Service, the CloudFront
content delivery service, and Elastic MapReduce for processing large
amounts of data.

http://www.pcworld.com/businesscenter/article/164086/amazon_to_offer_fre...