My two cents....we can go down this path with Jo if we want to, but we all know where it leads. One of the reasons this site was started, besides the bickering, was Jo and Robert dominated every discussion. Jo has accused Bruce of murder, Georger of being part of the JFK conspiracy (as a teenager, I believe!) and called Vicki a "sneaky snake". Rumor also has it that she was the one responsible for Carr leaving the thread.
I feel sorry for Jo losing her outlet, but I can't imagine it turning out well. It's your site and your choice, Shutter, but my vote would be "no".
Another thought: Posting was a huge part of Jo's social life everyday, but that was also true of Robert. I don't see anyone advocating giving him a "probationary" account.