There's always been this queston on my mind: Why doesn't the website auto add the threads you reply to as watched articles? Is this functionality meant for any other purpose? In my opinion, the reply action in a thread should work like facebook (i know... i know...): replying automatically subscribes you to the thread, until the user selects the "unsubscribe" ("stop watching this article", "remove me from the subsribe list", etc.) option.
I had been away such a long time, i didn't ever notice when that option was added.
It's always been there. ;) Under vBulletin the feature was called thread subscription in your control panel's options section, and under Daniweb's custom system it's automatically watching articles from your edit profile page. We added that feature before the migration from vBulletin to the current system.