title: LinkedIn / Twitter / Facebook as OAuth and OpenId use
body: <p><strong>Firstly I understand OpenId is for authentication and OAuth is for authorisation and unlike other questions on the site I am not asking which should be used for which but whether anyone can advise a solution for my issue.</strong></p>
  
  <p>I want to allow users to login to my site via their LinkedIn/Twitter/Facebook account once logged in say via LinkedIn they could also then authorise their Twitter and Facebook account as a optional login method. This would allow the user to authenticate via any of the three but end up with their user account on my site as the end result.</p>
  
  <p>I also want to use the authorisation they have provided to get basic user details (profile pic/name etc) and post status updates.</p>
  
  <p>I don't want to ask a user to login with their account via openId then have to authorise the same account again via oauth to allow my site to publish to their service feed and have to do this for each of the 3 services.</p>
  
  <p>Any ideas or issues to this issue?</p>