It worked well with Bally, because for one reason he's a fast typer. For another, he embraced the smiley library and used it to great effectiveness to add additional nuance to his posts.
But I could see where a guest could be buried in too many questions and comments to keep up, given this open thread concept. I don't have a better answer, other than that this thread exists for us to test some questions and give Drew a chance to read some ahead of time to prepare his thoughts and / responses. I was going to start a fresh thread just before the appointed hour to start clean.
I have one concern, so far all his correspondence with me has been via iPhone, and that is not a very quick way to conduct a chat. Plus, probably can't see the graphics we post.