Thinking about making the leap to digital books? First, you'll need to add a jumble of new lingo to your dictionary: .epub, pdb, BeBB, and Adobe Content Server 4, just to name a few.
The burgeoning marketplace for e-books is riddled with inconsistent and incompatible formats. That means there's often little guarantee that an e-book you buy from one online store, like the new Barnes & Noble store, will work on popular reading devices like Amazon.com's Kindle or Sony's Reader.
In fact, most popular reading devices and e-book stores use proprietary formats. Amazon only sells Kindle-format books (called ".azw"), which can only be viewed on its Kindle e-reader and with software Amazon has made for Apple's iPhone. Barnes & Noble uses a proprietary format (called ".pdb"), which can only be read with software the bookseller has made for PCs, iPhones and BlackBerrys.
That's why Sony won applause from some e-book watchers by announcing Thursday that its e-book store was switching from a proprietary format called BeBB to Epub, an open standard put together by an industry group called the International Digital Publishing Forum. Sony's Reader has long been able to open files in the Epub format.
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