Justin.tv was a website created by Justin Kan, Emmett Shear, Michael Seibel and Kyle Vogt in 2007 to allow anyone to broadcast video online. Justin.tv user accounts were called "channels", like those on YouTube, and users were encouraged to broadcast a wide variety of user-generated live video content, called "broadcasts".

How to remove Justin.tv account

Be logged in, then use the removal link.
Direct removal link: http://www.justin.tv/user/close_account