Being in the same domain, they have launched Tinychat Next which works the same way as Chatroulette.
Unlike other services, the user on the other end has to accept your chat request to begin the conversation.
Randomdorm is similar to the web apps listed above but is limited only to college students.
You should have a email id provided by your University or college to register and take part in a conversation.
The site also supports Facebook Connect, however, the email id with which you have registered in Facebook should be id. Apart from being an extremely hilarious idea, I noted a few funny things in these web apps.
For example, in the case of Chatroulette the only contact address provided is [email protected], which could well be appropriate considering the usefulness of the entire idea.