[Paul Stenning]

I agree that would be useful but it is not available in the software we use.

Subscribing to threads will achieve a similar thing, and when you go to User CP it shows all the thread you are subscribed to that have new activity. There is also an option in Edit Options to automatically subscribe to every thread you create or reply to, with or without email notifications.

Using subscribed threads with automatic subscription enabled (probably with no emails) and clicking User CP when you come back here should achieve what you want. It also has the advantage that if you are no longer interested in a thread you replied to a while ago you can unsubscribe, and you can also subscribe to threads that interest you but that you haven't posted in yet.