What exactly is a 'white list'? There is a check box for that on the account manager. Should that be checked or unchecked?  And what does it mean?

which appears any time that client posts, you will find at the bottom of the page of his reviews a section for white list referrals that are given by providers he has seen.

This is a form of screening that some gals accept, but obviously it has some limitations.

The checking or not checking determines whether or not the client wants his white list to be visible.