Bear in mind that when you write an article you do NOT have to have it show up on the forums as well. That is an option.
I don't read all the blogs but most of the nasty things I do read are in controversal areas. If I write an article blasting Michael Moore, for instance, I fully expect to get blasted in return. I have a thick skin. And if someone steps over the line, I just black list them.
I think what we'll probably end up doing is for premium members they'll be able to set up an "ignore user" option so that if they want to avoid someone, they can just put them into an ignore list and anything that person writes won't show up.