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Bits are bits - just ones and zeros. Your digital music, video, and photos are all merely data; they're not stuck to some physical entity, such as a disc or a tape or a piece of paper. An MP3 file might come from your iPod, your computer, or your cellphone. A digital videoclip might originate on a DVD or a hard drive, or from a satellite receiver or a cable box.

If you've confused some of the recent TV commercials from Verizon, AT&T and the cable companies with ads from Metamucil, that's to be understood. Both, after all, extol the virtues of fiber. But while the former claims it can help you lead a longer life, the latter promises to make it a happier one.

With all the buzz about the revival of interest in vinyl, you might be surprised to learn that record sales are still little more than a tiny blip on the radar screen when compared to either CDs or digital downloads. But there's no denying that lots of people are getting into vinyl either for the first time or following a lengthy CD-fed hiatus.