digital citizenship

Today, everyone has two identities, one in real life and one in the cyber world. What is the difference?  Are you doing things online that you would not do in real life?  Do you walk alone in the back alleys of the shady part of town?  What does the shady part of town look like in the cyber world?  Do you blurt out obscenities at people you barely know?  Why are people more rude on the Internet than they are in real life?  Do you walk around in your underwear, drunk, where people can see you? Are you aware that when you, or someone else, post pictures of you doing something unflattering, there will be more people seeing it than if you were to do it in a busy shopping mall?