I am aware that this is a public method, but there are many that aren't aware of this. Steps: - Be positive that the Username is not trademarked. I.e: Microsoft - Register on SoundCloud (The username does not matter, but you must be able to check the email on the account) - Check to see if the desired username has been inactive for more than six months. - Fill out the Inactive Profile URL Application ( http://goo.gl/n8b6sr ) - Now you must wait, it's easy as that. I hope that you all get the username that you want.