It's all about trying to control other people when you put up one of these classic manipulative blog how-tos deliberately in a format to guarantee constant Google-fetching and repasting. These various Internet memes like "OMG don't have a flamewar!" OR "OMG don't feed the trolls" -- these are just tribalist imperatives that lead to horridly dull conformity and spread an awful pall over most social media. Argument is very, very important, and if it gets heated, and sparks fly, good! It's real!
Times vs. Sullivan, the landmark Supreme Court case that is a keystone of a lot of media freedom in the US, says basically it is ok to call someone a name. It's ok. It is allowed speech. And that's the sort of robust speech that occurs in a democracy.
It's very important to respond instantly to tone. Tone is what people think they can smuggle in, often, in the emotional medium of forums and blogs, and imagine they can get away with leaving these emotional trapdoors around for people to respond to instinctively, and it's good to bring it to light. They need to be called on it. Instantly. And fiercely sometimes. The tone you are taking here is preachy and hortatory. But one can only say, oh, stop it. Are you smug about all the fanboyz below, about all the people who will cut and paste your link like some latter-day Dear Abby?
Neuralgic types often imagine there is an ad hominem attack, when in fact there's a quite unbiased report. And they often call "ad hominem" something that is a much needed judgement about a person that really needs to be made.
Gregfjohnson is good to remember Aquinas here. But Aquinas also conceived of a number of ways for virtuous men to reach Heaven even if they were not believers or baptised or following the scriptures; had the different categories of those "saved" met each other and converse, the one might be astounded at the heresy and dissent of the other!
Re-stating people's arguments often infuriates them precisely because they don't want to be summarized and fed back in stark form, or take consequence for the tone and the hidden agendas they try to smuggle into forums and blogs. So it's not a magic bullet.
The surest way for a forums discussion to go downhill is for some smug nit to go and pull up some "rules of rhetoric" and beginning banging on somebody's head that they are breaking some arcane "law of logic". Oh, do stop it. People need to express themselves. They know exactly what they are hearing in tone and implication, and they are right to respond to it.