Lately, I'm seeing more and more really old threads being bumped for no reason, i.e. people replying with really short, meaningless comments like "That's right/This doesn't work" or asking questions to people who have been banned or haven't been seen on DP for a really long time or people wondering why/complaining about an outdated solution to a 2009 issue doesn't work now and so on. My suggestion is that these threads should be closed after a period of inactivity, maybe something like a year or so. On most of the forums I'm on, they do that already.