I usually follow threads that address a particular plant issue and have not noticed anything untoward. There are often differences of opinion, but for the most part those remain civil and courteous, even when folks are passionate. Perhaps negativity becomes more problematic on the chit-chat threads that I rarely keep up with - too much to slog through, and often not particularly plant related, lots of pet photos. I also note some members are more rigid about staying on topic, while I don't mind a bit of wandering here and there. For me, the option to unwatch a thread is quite enough. Easy-peasy, no recriminations, out of sight out of mind. Done.
