I have now set up a test forum to expire threads 30 days after the last post so that they can no longer be brought back to life.
It is only setup in this forum as a test:
http://www.dnforum.com/f27/
please post comments, the days can be set to 60 or 90 if you like.
Here is a test thread from 2003 for you to try and post in.
-=DCG=-