It's Book Business Friday. There's continuing coverage on the new ways to read electronic books. One way is on smartphones, like Apple's iPhone. They may be small for reading on, but they are very convenient. No wonder these phones are growing in popularity. There's so much they can do--there are over one hundred thousand "apps," or application software items, available to use on them. Reading on a phone is a feature that some people are going to enjoy. There's a very good article about it here.