<http://schema.org/about>
"A Really Really Free Market encourages community by letting participants give away (and get) usable items and skills \u2014 all free of charge."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/lifestyle/responsible-living/stories/how-to-bring-your-community-together-with-a-free-market>