From P2P Foundation

From http://www.wirelesscommons.org/definition :

"In order for the network to remain open to all it's important to build agreements which allow traffic to pass freely over the network. Nodes in the network must pass all traffic regardless of origin, destination or content. It will be important to allow node owners to deal with abusive activity but whenever possible routing agreements should be as open as possible."

More Information

The above is a requirement for Wireless Commons, see the definition of a Community Wireless Network