If you haven't got anything nice to say don't say anything!

David, on another note, does the all-new VBulletin have a plugin for a question and answer threads? Ie, someone doesn't really want to discuss, just get an answer, people give answers which can be voted up and down, and the asker can then accept one answer. I think this works great over at http://stackoverflow.com/.

I dislike stack overflow. I think they've got it wrong. You lose control of your content too easily and are heavily constrained as to what you can and cannot ask. They also lack a time dimension.

Sure it's a considerable improvement over experts exchange, but that doesn't say much.

What you're asking is for a way to force people to stay on-topic and not have tangents within the discussions, can you even conceive that working here?