Bearing in mind that I am Scottish and finding spaces to chill out in the woods isn't as difficult for us...... to be honest Yogi and novembeRain, most of us pass along suitable sites by word of mouth and I'm pretty sure we'd all be reluctant to post them on any open website.
This forum is incredibly public, with literally millions of hits a year. However, we do meet up, make arrangements to wander, camp, forage with each other, and it's generally there, around a fire and a brew up, that sites are discussed.
I agree with the idea, in principle, but the reality is that unless the sites discussed are public ones, such as commercial campsites and openly available areas, folks aren't going to be happy giving details.
It's not intentionally defeatist just rather pragmatic.
Get to know some of the others in your area, or on line by pm, and see where that takes you.
cheers,
Toddy