I don't usually get offended by what people say, period, let alone online. However, when I'm already in a bad mood, I'm not thinking at all clearly. Thus attempting to do what you have posted, for me, is impossible. I am not thinking well enough to even realize I am not in my right mind. Which is something that happened to me recently in another topic. However, afterwards, i usually realize it, and try to correct it as well as apologizing to those I have offended. I don't often have a bad temper, but when it is elevated, I get blinded by it. Even making sure to avoid potentially problematic situations means nothing, because at that point, I don't even realize the potential for problems.
This is me as well. When I was having a really hard time with depression last fall, I was pretty cranky, and very negative in my approach to nearly all my communication, especially on the internet. Really, I was *looking for fights-and I'm a pretty good manifester, so I found them

. And related to Jennett's post, how my body is doing, generally, has a huge effect on my ability to interpret the words of others accurately and communicate clearly. If I'm eating right, exercising, attending to my spiritual practice and have a constructive creative outlet, I tend to be a nice person. If I'm not, I'm not
