Agatha had
asked about the forum software not marking the forums as read when coming back to the site after one's current session had expired. This is the behavior one sees at both TCF and TCR.
Here, because someone had mentioned it, the forum keeps track of your "read" status for each thread, even across different sessions.
So, which behavior do you prefer, the model where everything gets marked as read after your session is up (I believe that's after 15 minutes of inactivity) or actually to keep track of which threads you've read?