The land trust movement, from which conservation easements sprang, has been around for more than a century.

FORBES: Hedge Fund Giant Louis Bacon's Bold Mission To Save The American West

Critics also say the land trust movement is elitist.

ECONOMIST: Preserving farmland

This new model of marketing is primarily built around listening, sharing, facilitating: If you do that, people will trust you enough to let you be a part of their cultural movement.

FORBES: The Movement is the Medium

Not only does that investment make possible the immediate knowledge of every movement of goods, but it is also the glue of trust for a new wave of worldwide commerce.

FORBES: Logistics in Brown

Most states limit the generation-skipping aspect of dynasty trusts to great-grandchildren--who must dissolve the trust and pay estate taxes on the principal--though there is a movement to allow family trusts to continue in perpetuity.

FORBES: An Estate Plan Worthy Of Scrooge