I wish I'd read your article before erasing my 'keeping me away from america' one - the one were I started a debate about fingerprinting and civil rights and the threat of terrorists. I got alot of comments back from that that I hated, not cause I was opposed to what was being said, but because I felt, with one or two of them that I was being attacked. BUT, I erased the article cause I felt like a dumbass for posting it in the first place and not because people disagreed with me.
It's entirely up to the blogger who they choose to blacklist, afterall the great thing about someones weblog is that it's personal to them... but at the same time - you have to expect to get some shitty comments cause afterall, your'e posting your own comments on the world wide web and effectively exposing your thoughts to a hell of alot of people!
But I still wished that I'd read this article sooner, cause as a newbie, my first taste of 'negative comments' was quite an upsetting experience. I've promised myself to be tougher now though!