The Trolls

Have you ever noticed how a person could be kind and considerate in person but a jerk online? This happens especially when the people are posting comments anonymously. It fosters these trolls. That's the term. Troll. A person that posts something negative for its own sake. I haven't met that many on my own blogs or sites, but that's probably because I haven't written/posted much. What do you do with a troll? Tell them to get lost? Block them? Make sure your sites don't allow anonymous posts? Act Christian toward them? I don't know. If you have any non-trollish comments on this, please let me know.