I've had this in mind, and conversation for the last few days, and realised not a lot of people know it exists.
Barter system,basically. Our Dept is having an evening soon, and the ad looks like this (hope I did that right-first time).
Basically, everyone has something that somebody else wants... money never changes hands, and, you find really down to earth, sound people. An hour of your time cleaning the windows of the lady nextdoor may yield you a crop of apples.... give a few beetroots to a nearby plumber, and he'll fix that leak in your canalisation.
Anybody taken part in this?