title: iAds: Displaying own ads when didFailToReceiveAdWithError
body: <p>Outside the US and a few other countries (UK, France, Deutschland, Italia, España, Japan/日本), ads from the <a href="http://advertising.apple.com/" rel="nofollow noreferrer">iAd Network</a> aren't showing up much on iOS, yet.</p>
  
  <p>In the meantime, besides using <a href="http://www.admob.com/" rel="nofollow noreferrer">AdMob</a> and <a href="https://stackoverflow.com/questions/5387609/iad-integration-in-iphone">the like</a> to fill the blanks, I wonder if it's possible to display our own ads built with the <a href="http://developer.apple.com/iad/iadproducer/" rel="nofollow noreferrer">iAd Producer</a>.</p>
  
  <p>So, the mechanism would be that when advertisements are not available, therefore triggering <code>bannerView:didFailToReceiveAdWithError:</code>, it triggers our own ad instead.</p>
  
  <p>If so, any ideas on: (1) if it's effectively possible to run our own iAd-Producer ads; (2) if so, how to implement that mechanism?</p>