A click creates a new section of the subpage, with the timestamp of the previous comment as subpagename 
You may reply on your own talk page. I can read it on mine. 
Bouncing over my head... 
Although I am aware of how the threadNav works in principle, I have never been able to fathom it in it's operation in the last two weeks (in whatever sparse time I could spend on it). I want to make some modifications to it so that it is more simple to use for students.
Now, this may sound very stupid coming from an engineering student, I am almost stuck on porting this little code in operation to http://en.wikiversity.org/wiki/User:Thewinster/Sandbox/Forum-Watch. Would you mind editing the page and put the bare minimum code on the sandbox? That would be a BIG help! --Dharav talk 12:04, 23 February 2009 (UTC)