title: Duplicate tweets on twitter widget when tabbing and widget updates
body: <p>I have multiple embedded timelines on a website I am developing. The HTML for these timelines are auto-generated by TweetDeck.</p>
  
  <p>Scenario:
  1. A user switches to a different tab in the browser.
  2. The timeline widget receives updates with multiple new tweets.
  3. When the user re-activates the tab, the embedded timelines get flooded with duplicate tweets.</p>
  
  <p>I have tried to change multiple parameter settings for the embedded-timeline class, but have not been able to fix this issue.</p>
  
  <p>Does anybody know what might be causing this behavior? </p>