I voted 3, here is why.

Personally I love the idea, I actually think that you can learn almost as much reviewing other people's hand histories as you can from people reviewing your own.

However, the key to this is reviewing GOOD players hand histories. If you are picking up a hand history file I think that I would like to know if it is someone who is winning at 3bb/100 and looking for minor tweaks or someone who is -3bb/100 and in desparate need of help.

The issue will be to have people provide a screenshot of their PT general tab before posting, so that you know what your getting into.

I don't know if this makes any sense, but it is what I was thinking.

Margon