Ed, I wonder whether the Related Posts facility is misunderstood and is causing people to waste time posting on old threads and as a result AB is losing new members soon after they join.
A few days ago I raised a couple of examples of Crosswords threads from 2013 which were still getting pages of answers and new questions were being tagged on but clearly these would never appear on Latest Posts so users may think their post has disappeared into a black hole. I'm guessing they found these threads by clicking on a Related Post rather than a Latest Post.
http://www.theanswerbank.co.uk/Quizzes-and-Puzzles/Crosswords/Question1237973-7.html
I have also noted that some new users seem to answer old posts, e.g. this one from over 10 years ago was answered yesterday-
http://www.theanswerbank.co.uk/Home-and-Garden/Question41943.html.
The poster answered quite a few very old questions and probably wonders why he gets no thanks.
Just a thought.
I wonder whether there is an easy way for techies to check how many