If the question title doesn't make sense, please forgive me, I'm not a networking person. I will try to describe what I mean:
When you view your available networks on your computer, some are your service and some belong to others/neighbors. Theoretically you could connect to your neighbors' if you had a deal with/trusted them.
One could imagine ways to make this beneficial for both you and your neighbor. You could make a few extra bucks by someone else using your service, and this person could avoid signing contracts and dealing with ISP's.
But the usefulness is only as good as your relationship with your neighbor. One wouldn't want to engage in something with a bad neighbor, much less a perfect stranger. What if they hack you or give you a virus?
I'm wondering if this is necessarily the case. Is there any way to make WAP's secure? What if both owner has set up the WAP to use a CJDNS NAT gateway?
It's possible that I've confused some concepts here, so please feel free to be blunt with your answers. Thanks for reading.