Students at Duquesne University are finding GradeGuru to be a good source for extra cash. In the article, Students earn cash for sharing good notes, student reporter Kalifa Augustus writes:

“Most college students are always looking for extra money, and most find it through part-time or odd jobs. But some students have been making money recently just by attending classes, taking notes and then uploading them to a Web site called GradeGuru.com.

GradeGuru is a Web site sponsored by McGraw-Hill Higher Education that allows students to upload and share relevant, well-structured notes online with other students who may be taking the same courses. It was launched in the United Kingdom last spring and in the United States last fall. 

Students who upload notes that moderators find to be exceptional are rewarded monetarily. The sum of money rewarded depends on the quality and quantity of the work. Students who upload notes from one lecture are paid $3, and students who upload an exam study guide for one course may earn $10. ”