Land ceilings: reining in land grabbers or dumbing down the debate?

Governments in a number of countries are trying to address concerns about land grabbing by closing their borders to foreign investors. Are these restrictions effective?
Not really, says GRAIN. They give the impression that something is being done at the highest level and appeal to nationalist or pro-sovereignty sentiments. But they are very narrow approaches to a complex problem and often full of back doors and loopholes.