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As the Internet works its way further into pop culture, sites like YouTube and Twitter pop up more and more in the routines of late-night shows like Conan O'Brien, Jimmy Fallon and last night, David Letterman and Jon Stewart. Digits can't get enough of 'em.

With the recent release of the iPhone 3GS, a new wave of users is getting acquainted with Apple's popular mobile device. Those new iPhone owners must also choose from hundreds of applications, many of which border on the absurd.