in reply to
Re^6: A Proposal for Additional Levels
in thread A Proposal for Additional Levels
Use Recently Active Threads then with a threaded view. IMO its pretty obvious what you have read and not because you can see the authors of the parents and also because newer nodes will be lower down on the page. Thus you usually will quickly realize if you have already seen the thread. At least I do.
First they ignore you, then they laugh at you, then they fight you, then you win.