A little under a year ago, Apple began cleaning up its app store, seemingly banning app after app that had any form of titillation. Citing complaints from customers who found the apps degrading and upset about what children were able to see, the company vigorously purged hundreds of apps that focused on subjects such as women in swimsuits.

But porn is like water. It finds a way into everything and is actually thriving on the iPhone, iPad and iPod touch.

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