Believe it or not, the internet can be a dangerous place. Sure, you can't catch a real virus from it and it won't physically harm you, but the people with which we engage on the internet can cause other types of damage. If you're going to use the internet (and you know you are) you should be aware of the various people you may encounter with an understanding of how to engage with them in the safest ways possible.
This infographic by Flowtown
gives us some insight into how best to move forward.