Trading Waste

It's hard not to read an article titled so suggestively - Crap and Trade. The author is inspired by the Indian experiment to provide monetary incentive to encourage the use of public toilets by paying the poor instead of relieving themselves in public. He argues for Americans to be likewise paid for using public toilets even if not for the same reasons as the Indians are being paid. He says :

I bet somebody will figure out pretty soon how to monetize toilet waste. And it won't be the government; it'll be the private sector.