In a process called the gift circle, everyone shares their needs eg. need dogwalking, editing help, haircut etc. Then others can volunteer to help them without barter or money being exchanged. Over time this builds a community as everyone helps everyone. https://opencollaboration.wordpress.com/2009/11/28/gift-circle-faq/
The overall mission is to change the world. When you've done that, then you can read this tiny ad:
Escape to gardens and natural buildings (for free-ish) in Montana