Recently I involved quite "heavily" in some discussions in a Chinese forum. The reason I participated was because those discussion were started over my articles published in that online Chinese magazine (Chinese News Digest). My experience there was almost completely negative: about 80 percent feedback I got were frequent personal attacks and (unaware or purposeful) serious personality judgement, despite the fact that I was one who wrote article in that place for about 8 years, and joined discussion often since my first article published there since 2004.
Beside the frequently occurred personal attack and personal judgement, those who took discussion seriously often were those who could not focus on topic, so the "marathon" exchange ideas went to nowhere. I decided that from now on, I should just focus on my writing on my own, take no or less participation in the Chinese forum. It just doesn't do much good for me, except frustration and disappointment.