I'd like to point out this note from Rob Schmitz, one of Daisey's interrogators:
What makes this [This American Life's actions] a little complicated is that the things Daisey lied about seeing are things that have actually happened in China: Workers making Apple products have been poisoned by Hexane. Apple’s own audits show (PDF) the company has caught underage workers at a handful of its suppliers. These things are rare, but together, they form an easy-to-understand narrative about Apple.
Hmmmm. So Daisey "lied" about things that are actually true. I wouldn't say it's time to buy your next iPhone yet.