Gotta say, I never was on any of the boards mentioned in this post. Probably just before my internet time, and really my introduction to DS. I remember being on many Yahoo Groups about DS, and other shows as well, and boy there were plenty of trolls to go around on there. It always amazes me that no matter where you go there is always something going on with trolls, breaking of policy, etc that happens.
Currently I belong to a couple DS groups on Facebook, and on at least one of them there seems to be posting of reminders pertaining to rules/regulations of the group just about every week. Too much for me to keep track of, which is often why I remain an observer rather than a participant in many of the discussions. Especially because the discussions can devolve into out and out fights a majority of the time.
For this board, I remember being quite active around here in the early 2000s sometime when I first discovered it, and since then I've popped in an out as I've reengaged with the show several times over the years.