Videochat
It s the second step, usually if two persons like each other and both have webcam they can use a videochat program... they can chat with voice and also see each other

A lot of persons also do nasty things with webcam ... lets say adult games or xxx

It' s wise if you are a parent... pay attention, and speak with your children, because internet is made by persons, there are many persons who are very good, but also some ones are quite crazy