Clearly that has worked about as well as micro payments for email ;-) But seriously, there is an equivalent strategy, and that is putting up a small road block

Clearly that has worked about as well as micro payments for email ;-) But seriously, there is an equivalent strategy, and that is putting up a small road block such as writing a test application. The problem is that many qualified people won't do it. Those who are currently employed are the least motivated to pay in time or money to submit an application.