Seriously, how does it happen? People trawl through 60 pages of threads and think 'oh that looks interesting, I'll post on that?' Or they take a two year break from MN and click 'threads I'm on'?
Look, don't post on any threads that are not 1- on the first page of a board 2- in active convos 3- a long running thread you are part of or 4- something very useful and informative that you would like to share with more people.
Ancient threads asking for advice on baby names or hen night dilemmas - let them die people. I don't think people need your advice 2 years later....and it bumps threads to the top meaning more people waste their time and keep bumping the bloody threads.
{phew}