I always point out "donators" don't get paid
you can get stuck with a needle and sell your fluids but prostitution is illegal. Hrm.
drink a ton of fluids. I see a fair amount of people who get their $35 payday and then get a $2500 ER bill for passing out afterwards.
Used to sell as a college student. The saline they pump back in made me chilly, other than that I never had an issue.