There is a ministry that is getting a lot of publicity lately. There is an HBO movie about it, a Nightline interview, NY Times, Catholic.org, etc.
The name of the ministry is Hard As Nails. It focuses on re-creating the true cost of sin, by showing what kind of suffering Christ (and others) have gone through because of it. The radical nature of the way they present the Gospel has both good and not so good aspects.
My take? You shall know a tree by it's fruits. If it is bearing fruit, then may God bless them abundantly.
Tip o' The Hat to Amy Welborn.