Markets in everything

Drivers in three US cities will soon be able to earn a buck or two just
for vacating a parking space. SpotScout is a website that matches
people about to leave a parking spot with those looking for one. Using
a cellphone, drivers tell SpotScout when they will leave their parking
spot, where it is, and how much they will sell this information for.
The site, to be launched next month in New York, Boston and San
Francisco, matches this information with people looking for a space.

Here is the link; the pointer is from Daniel Akst.  If you don’t already know it, here is Dan’s article on how to best help other people.