670,000 users from all over the world visit it every day.
Chatroulette is different from all other chats: it gives its users the unique opportunities for communication.
This is where the roulette part in chat-roulette comes from.
Those are the reasons why this type of chat is also called a stranger chat or one-on-one chat.
The only difference was that it was a text only chat and that you couldn't use a web cam or see your partners.