A lowly form of income for destitute college students, involving the completion of online or mail-in surveys and questionnaires for some kind of compensation, usually monetary in nature. Oftentimes, the actual content of the answers to the survey has been fabricated to make the survey taker (student) eligible to receive the compensation.
A: "Hey dude, how'd you make all that money?"
B: "Survey prostitution, man!"
A: "What's that?"
B: "It's where I take surveys for money!"