I was a bit taken back as well Rebecca, given the amlount of trolling that people do.
I have never commented on an online story before, preferring to talk about what I have read in person, with family and friends. i have though, in my life a few people who have engaged in "twitter wars" with others over heated topics. There was most definitely an energy that came from that. Can't say that they were happier though....
Keep us posted about your commenting!