Wrongful conviction work is a binary endeavor. Either the person wrongfully convicted is freed or he is not. It's of little consolation to say "We'll, we gave it a good shot."
Any success story is a result of years of enormous effort by dedicated, talented, selfless people almost always working pro bono. And should they ever succeed, the State is apt to say "It just proves the system works."
I have enormous respect for those few people who have ever managed to help free someone wrongfully convicted. I have enormous respect for those many people who helped free Cory Maye. Cory Maye has walked free, as I predicted he would.
Radley Balko has pictures at his site. You could do a lot worse than spend some time checking out his blog.