In Chatroulette you just press the "next" button and the chat will switch you to a new interlocutor.With the advent of the Internet, communication and acquaintances have become more available.
In the chat Chatroulette you will be able to see and hear the interlocutor in real-time.
With the webcam it's much more convenient to make new friends!
Easiness and convenience are the main reasons why, in spite of the big number of competitors, Chatroulette continuous being so popular.
For lots of people it is quite difficult to talk to a stranger in the street and the more to get acquainted.
Not only that, it gives people a chance to visually see who they are chatting with so that no one can mispresent themselves.