Here's a blurb from a web promo for the 20/20 program airing on Friday, March 21:

"From expensive New York penthouses to Nevada's legal brothels to the tough streets outside Philadelphia and Reno, Sawyer speaks candidly with America's "working girls." "

And the link to the web article:

http://abcnews.go.com/2020/story?id=4480892&page=1

This will (not) be interesting.