In terms political prescriptions, very little, which is why I am often reluctant to call myself a left-libertarian. However, a lot of libertarians will defend aspects of the modern economy which are in fact the result of state intervention. For example, I’ve heard libertarians defend sweat shops or working conditions during the industrial revolution on the grounds that they are good for the poor because they are better than the alternatives, despite the fact that in many cases there are better alternatives which have been suppressed by the state. Left-libertarians are also typically anti-political and are “thick” libertarians.