I am also a college student who can use the extra cash. And just recently a friend referred me to a plasma donation center that allows donations 2 times a week, with a minimum of 48 hours between donations. I was really curious about the short- and long-term effects, and this article really helped, thanks Alice. On a side note, the donation center usually staffs a doctor who you can talk to and find out if there are any short- or long-term effects too. Again thanks for the advice.