Disquos is great for keeing track but not all use disquos
I imagine something like when I want to reply to a thread in geekzone i right mouse click and it brings up a box I type the reply in and it automatically saves it and gives it a number and its stored in a DB
I then go to the message box and paste the comment in the message
This is then sent
If and when somone replies "somehow" it flags the initial database on my computer
thats simple enough to build ...... off you go...