title: Authenticate user with twitter login
body: <p>I wonder of someone know a working sample of logging in using Twitter (OAuth) for .NET</p>
  
  <p>I'm currently using this one <a href="http://www.voiceoftech.com/swhitley/?p=681" rel="noreferrer">http://www.voiceoftech.com/swhitley/?p=681</a></p>
  
  <p>but it only works if I set the callback url to "oob", if I set a real callback url I get "401 unauthorized".</p>
  
  <p>Thanks!</p>