title: ShareKit Facebook/Twitter logout is not fully working
body: <p>This is a urgent question to be answered quickly.
  I'm developing iPhone application to share the images to social networks.
  I'm using ShareKit 2.0 library to implement sharing functions.
  I could implement sharing functions perfectly using this and I recommend to use ShareKit library to implement sharing on your app.</p>
  
  <p>The problem is only on Facebook/Twitter logout.
  When I wanted to logout from them, I used codes such as following.</p>
  
  <pre><code>[SHKFacebook logout];
  [SHKTwitter logout];
  </code></pre>
  
  <p>Or I used</p>
  
  <pre><code>[SHK logoutOfAll];
  </code></pre>
  
  <p>But I couldn't fully logged out from them, and when I tried to share the images to them, they said "You are logging into this app as XXX" and only asked to confirm this.
  Whereas when I removed the app from the iPhone/iPad, they required mail address and password to login again.</p>
  
  <p>I think that is not a big problem to experienced and talented developer.
  Please help me.
  I'm waiting your advices.</p>
  
  <p>Thanks.
  Pei.</p>