I haven't heard of Listia before now.... I've used Freecycle, though, for (has it been?!) nine years, Offering, Wanting (rarely), and supplying items to people who've posted Wants.
Take a look. I just checked the homepage at https://www.freecycle.org
, and here are the current statistics:
"Welcome! The Freecycle Network™ is made up of 5,121 groups with 7,283,156 members around the world. It's a grassroots and entirely nonprofit movement of people who are giving (and getting) stuff for free in their own towns. It's all about reuse and keeping good stuff out of landfills."
No one keeps tabs on what you offer, supply, or take. It's completely cash-free and free-will. I can't say enough good things about Freecycle.