Anyone heard of harvest hosts (free camping database)

www.harvesthosts.com

I belonged once but found it not that a valuable resource. Almost all hosts require at least a 24 hour notice, not unlike making a reservation, the sites are almost universally without hookups, many don't allow generator use, and you are asked (mandated if you will) to buy something from the host for at least $10.00. Lots of the sites are wineries, and I can't drink a pricey bottle of wine every night!