Barter Exchanges. Bartering is the trading of one product or service for another. https://www.irs.gov/forms-pubs/about-form-1099-b
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Best Places to Trade Stuff Online https://www.moneycrashers.com/best-bartering-swapping-websites/
Barter exchange in Vancouver, Washington, USA. http://tradeyainc.net/
Barter system for business and individual accounts located in Scotland. http://tbex.gets.cc
Online Software to Run Your Barter Exchange http://www.bclsoft.com