The "subscribe to threads" option mentioned above is about as simple as it gets. Whenever you like just click on "User CP" and your "new subscribed threads" will be displayed. Don't see what you want? click on "view all subscribed threads". You can also subscribe to threads that you haven't posted in by using the "Thread Tools" menu. Good for keeping track of discussion that are amusing or where you're waiting for a member to say something dumb, so you can jump on them.