Bleh

"although a "Now take me back to where I just was" button would be useful after you've clicked it."

Such a button already exists. It's your browser's back button :)

As for the spaghetti, I agree about that. There are two solutions: Move that subthread out into its own thread, and the collapse button, which I've hidden for now because it was fugly and was taking up too much space.

Ah. Good point. Hadn't thought of that.