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this is a fantastic idea! you should do this, and i will certainly upvote it!

Shall we start with one in Indiana? Do you suggest anarchos form some sort of company to own the property, whereas each individual rents from said company? Or find a property and subdivide it down for each individual to own his plot?... leaving about 10-50 acres or so for "community" activities (such as a "farmers' market" or "fair grounds"?

May I suggest Elkhart Co., where Sheriff Brad Rogers will protect the effort, I believe.