Hi: After this authenticating at this url: http://api.myspace.com/authorize?oauth_token=xV5SNHElLaO%2B4hvoYQlhJGptSN2TXi8EjCt3AVGwVYS2JbH%2FY3LwJhC8uEim5w3NsIuZ6EjZiAe2gimPphSsZ8gkW%2Fjma3mp2Wp6LSwIKRIa0qppvuEYg4haTr7EozR1&oauth_callback=http%3A%2F%2Fdog.com%2Fsocial_buy%2Fmyspace_authorized%3Fshare_id...

Please clarify: why is callback_url needed for desktop apps using OpenSocial REST? After peruing MySPACEID I am still at loss how to do a simple login authentication using REST APIs request_token authorize? - what is the need for callback_url?

We are developing a MySpaceID application which is in a very early stage. We'd like to do some early testing. If someone other than the developer of the application tries to use the application he's not redirected to the application after authentication but instead sent do myspace.com. I assume...