title: Does ADMOB have a blacklist for the applications?
body: <p>A friend of mine has developed several applications which were simply collections of sexy pictures(no nude). They all received ads normally at the beginning but all stopped to fetch ads after several days.</p>
  
  <p>Some of them stopped after hundreds of requests, while others stopped at 1k/2k request. From the logcat we can see that it is reporting that</p>
  
  <pre><code>onFailedToReceiveAd(Ad request successful, but no ad returned due to lack of ad inventory.)
  </code></pre>
  
  <p>but we wait for more than a week it still cannot recover from this problem. And on the ADMOB console we saw that all the related ads are marked as greed point with excalmatory mark saying that the "site has not requested ad for the past 72 hours"</p>
  
  <p>We tried to create a new ad for the same app, but it still reports the same issue.</p>
  
  <p>However, we use the same ad in another test application with different package name, the ad shows normally.</p>
  
  <p>So, I wonder if Google has blacklisted the application. And is there any way to contact the authority of ADMOB to check which rules we have violated so that we can fix it in future.</p>