It’s an inescapable truth that for some people, the most interesting way to participate in online discourse is to kick holes in the conversation. Others—many of them young, but some, alas, old enough to know better—have a sense of entitlement that leads them to believe that their having an opinion means the rest of us are obliged to listen to it. Still others plainly get off on verbally abusing others, and seek out conversations that will offer them opportunities to do so.

Teresa Nielsen Hayden, who has been dubbed "the troll whisperer" for her moderation skills, on the dynamics of trolls and flamers, and how to moderate a discussion to encourage participation and discourage rudeness and abusive behavior.

Bravo. There is a difference between maintaining boundaries and enforcing censorship, despite what trolls will tell you.