Correction--I just re-read and I now understand that you are talking about all aspects of using these forums. I think my previous response covers questions A and C.

Question B is something I might do later, but I do think re-reading posts helps me to look at things from "outside of the moment", then I can re-think the situation and hopefully I will learn to change some of my negative thoughts/behaviours by doing that.

And for question D, I haven't seen any of that yet.