title: Difference between Strong and Weak IBOutlets
body: <p>What is the difference between <code>strong</code> and <code>weak</code> IBOutlets in the Xcode iOS 5.1 SDK?</p>
  
  <p>I was previously using the 4.3 SDK, where strong IBOutlets did not exist. In addition, (auto)release is not available in the iOS 5.1 SDK.</p>