Mike Feddersen wrote: I guess the secret is finding each other.
I think you already found the key to the problem; we just need to find a way of connecting them- kinda like a dating site...
There already exists a platform similar to the concept being proposed:
LandShare and
SharedEarth. However, the specific niche to fill the gap we're talking about has not yet been filled on the web from what I can tell.
For starters, I think cities and townships could start posting ads for their opportunities in the Classifieds Section of newspapers, Craigslist ads, Facebook and YouTube ads, etc.