You can ask a question or share a thought and you will be shown a list of people with similar interests to talk to.
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.