I am a HUGE dog lover. I think he's an idiot for letting dogfighting happen on his property, whether he had knowledge or not... he had everything going for him and threw it all away.
That said, any other person who has been to prison comes out and has to go back to the work they know. I believe that Vick should have that same opportunity. If the NFL and the fans want to see him play, then he should have the chance.
He's proven in the pre-season that he still has the skills.
I once heard that every great man spends a little time in the dark. Maybe this was Vick's.
I still believe he should do some things in his personal life to improve public opinion; do pro-bono ads for the humane society, talk at schools about the pitfalls of fame, maybe adopt a dog.
What he does in the near future will determine if he's just a great football player, or a great man.