MA nonprofit OpenBiome offers $40 for fecal donations to build healthy bacterial pool to treat colitis; rigorous screening process culls 96% of applicants.

"You can donate blood, plasma, eggs, and sperm. Why not poop? Yes, your feces are perhaps your greatest untapped monetary resource. Thanks to a nonprofit organization called OpenBiome, you can cash in to the tune of $13,000 a year -- and save lives while you're at it. Since 2013, OpenBiome has been processing and shipping loads of it all over the country. The frozen stool is administered to patients who are very sick with infections of a bacteria called C. difficile." -- Rachel Feltman, the Washington Post