Apple's Ad-Blocking Move Causes Big Problems for Retailers

When Apple  last week released a new operating system that permits ad-blocking extensions, all sorts of media publishers protested. But a much larger outcry may soon come from retailers and those who use their iPhones to make online purchases. A Fortune investigation shows that an iPhone enabled with Crystal — the top paid iOS app right now — is unable to fully render the e-commerce sites of many major retailers, including Wal-Mart, Sears and lululemon.