Online communication, or chat, can be divided into two types: text chat and video chat, which has become the most widespread mean of online communication since webcam became popular.
So, what this means for you is if you are particularly uninteresting or uninviting on the eyes, you may get "next"-ed over and over, such that you may find the service to be somewhat depressing.
DO NOT FRET, eventually you should find someone willing to give you the time of day!
Once you are connected you may have a chatting session with this unknown stranger, but at any time during the connection both you and the other user have the option of pressing "next".
If EITHER of you should press the infamous "next" button, the chat session will end, and another random connection with another completely different random stranger will ensue.