Someone posted on superuser about desirable machine specs. It's a fair question but the answers will date rapidly (and to be fair to them they did say "Mid 2009" in the question).
Anyone any thoughts on whether it's desirable to be able to mark questions and/or answers as timeless or "timeful"?
They wouldn't disappear, just be less visible in some way.
If it could be done then the database would clean itself, at least in part.