Caveat emptor; also see For Apple, Pressure Builds Over App Store Fraud (NYT)
But living up to those promises has become increasingly difficult as the App Store has expanded to include nearly 600,000 games, organizational tools, and other programs. Once criticized by app developers for long approval times and arbitrary rejections, Apple is now struggling with the opposite problem: letting through too many apps that violate the company’s own privacy rules or rip off trademarks. The company is also trying to swat down startups trying to manipulate the App Store, which has helped drive sales of more than 315 million iPhones, iPads, and iPod touches. Apple declined to comment for this story.