It's important to have good manners anywhere...

It doesn't matter if you're on the Internet, at school, or work. It's important to have good manners everywhere because you never know who's watching you or what you write. For example, if you leave your email address on an application. And they look up your Facebook, or Twitter. If you're looking up someone's page and you saw they post mean things about other people, you wouldn't hire them. That's why it's important to always practice good etiquette on the Internet, no matter what.