I used to handle comment moderation for a metro newspaper, and I was floored by the amount of time and effort people put into posting racist diatribes. We had some who must've been script kiddies, because they started automating their comments, just like spammers. But they were selling hate, rather than ED pills.

I had proposed charging a nominal amount for comment account creation, but I got a hard no. Too bad. It certainly would have thwarted the worst offenders, who were creating dozens of accounts a day.