Amusing to read that poo donors in the US make can make some decent money (well, decent pocket money, I guess):
To donate, Eric had to pass a 109-point clinical assessment. There is a laundry list of factors that would disqualify a donor: obesity, illicit drug use, antibiotic use, travel to regions with high risk of contracting diseases, even recent tattoos. His stools and blood also had to clear a battery of laboratory screenings to make sure he didn't have any infections.
After all that screening, only 3% of prospective donors are healthy enough to give. "I had no idea," he says about his poop. "It turns out that it's fairly close to perfect."
And that, unlike most people's poop, makes Eric's worth money. OpenBiome pays its 22 active donors $40 per sample. They're encouraged to donate often, every day if they can. Eric has earned about $1,000.