This isn't fully thought out yet, so don't get screamy. I'm not sure if this is wasteful, but it would be interesting to have the option to "open a chatroom" for each question right in the page.
I think it's socially awkward to have to navigate to another page. It's like going on a camping trip with a friend, but having nothing much to say. Eh?
So you could just plant a chat room object in the left margin that gets activated when people are commenting too much.
The chat log is saved there, rolled out, in lieu of the lengthy comment stream that sometimes builds up.