This is pretty much off-topic for this blog, but you know, if you feel like jumping into an online fight, think twice--it's probably not going to bring out the best in you. (This is specifically about Facebook, but I think it can apply just as well to having a blog.)

Most of us present an enhanced image of ourselves on Facebook. This positive image—and the encouragement we get, in the form of "likes"—boosts our self-esteem. And when we have an inflated sense of self, we tend to exhibit poor self-control.

"Think of it as a licensing effect: You feel good about yourself so you feel a sense of entitlement," says Keith Wilcox, assistant professor of marketing at Columbia Business School and co-author of the study. "And you want to protect that enhanced view, which might be why people are lashing out so strongly at others who don't share their opinions." These types of behavior—poor self control, inflated sense of self—"are often displayed by people impaired by alcohol," he adds.

The poor self-control spills over to other areas of life: People who spend lots of time with uncritical friends on Facebook are more likey to go on eating binges and to have more credit-card debt. The article goes on to say (emphasis added):

We're less inhibited online because we don't have to see the reaction of the person we're addressing, says Sherry Turkle, psychologist and Massachusetts Institute of Technology professor of the social studies of science and technology. Because it's harder to see and focus on what we have in common, we tend to dehumanize each other, she says.

Astoundingly, Dr. Turkle says, many people still forget that they're speaking out loud when they communicate online. Especially when posting from a smartphone, "you are publishing but you don't feel like you are," she says. "So what if you say 'I hate you' on this tiny little thing? It's like a toy. It doesn't feel consequential."