title: Can you change the image hosting for a TWTweetComposeViewController from Twitter to something custom?
body: <p>I would like to tweet from my app with an image, but I want to host the image on my server and have the tweet point to that.</p>
  
  <p>I would like to not have to reimplement the entire UI of TWTweetComposeViewController (I know I can do this by just coding against NSUrl and TWRequest).</p>
  
  <p>Looking at the API, it looks impossible, but perhaps there are 3rd party GUI codebases written on top of TWRequest or a way to reuse the Sheet GUI, but get the final button click and handle it myself (with TWRequest calls).</p>