From the FAQ:
When you post to a sunken thread without contributing to it in a meaningful way it is called bumping or dredging, depending on the age of the last post. This is not permitted on this bulletin board.
If your thread can not stay up on its own merits then it should sink. If you post to your own thread or anyone else’s after it sinks, without actually contributing, the assumption is that you are trying to artificially reheat your thread or are trying to increase your post count. […]
Am I allowed to bump an ancient thread if I have something interesting and relevant to say which contributes to the discussion?
Let’s take the screenshots thread as an example. If nobody posts screenshots there for a month or few, am I allowed to post my own interesting screenshot there?
Or let’s say I create a thread discussing a mod I created for Ambience, a few people reply, then nobody posts there for months, but I update the mod. Should I reply to my own thread with details of the update as I would if no time had passed? Or should I create a new thread for the update? Or should I not post about it at all?
I’m assuming this rule is enforced manually by a human rather than automatically by a robot, is that actually the case?