The first time I heard of adopting an alternative currency was at PAPA fest. They used “Papas” as a form of currency that you earned by helping out throughout the festival (volunteering at the kids tent or registration, or helping with the compost) and then could spend at the stores people had set up. It was an interesting concept for a festival.
Then I heard Ithaca, NY mentioned and the story that they had been using an alternative currency for since 1991. It’s a very interesting concept, and one I’m not entirely sure I completely understand. I like the things they are promoting, and I see some of the reasons they feel an alternative currency helps them accomplish those goals.
Here’s a cartoon from their website that sort of explains what it’s all about. I was still a little confused, so you might have to visit the site to learn more:

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