But then comes the features that your mom's copy of "Gone With the Wind" can't match. E-book devices like the Kindle allow you to change the font size: aging baby boomers will appreciate that every book can instantly be a large-type edition. The handheld device can also hold several shelves' worth of books: 200 of them onboard, hundreds more on a memory card and a limitless amount in virtual library stacks maintained by Amazon. Also, the Kindle allows you to search within the book for a phrase or name.