>Even with the ability to use scrollbars, both vertical and horizontal? What %'s of threads grow that big. Still, it is an interesting point you have brought up here...

I think there are a number of threads that grow to nesting beyond 5 or 6 levels easily. Scrolling would make it functional but certainly not ideal.

>What if the option were available to open the tree view in another window????

That may be an alternative but it would still mean that we would need to reduce the size of both windows if we wanted to see the tree and teh message simultaneously.