This is an appropriate question in view of the shift that is taking place in communication.
Online communication is a boom to humanity, to be sure. However, there are some downsides to online communication, which requires some insight.
First, we need to realize that much communication takes place non-verbally. People speak with their hands, their eyes, and body positions. All of these are lost when we only communication online. In other words, important social cues are diminished online.
Second, because we are not dealing with people face to face, it is possible to forget that we are dealing with real people with real emotions. The result of this is that we can be cruel, insensitive, and uncaring.
In light of these two points, we need extra caution when it comes to communicating with people online.