As interest grows in the digital-textbook arena, one of the providers of e-textbook subscriptions has announced plans to make over 7,000 titles accessible via Apple’s iPhone and iPod Touch. The new applications that enable the eBook access will be free to subscribers of CourseSmart LLC. The apps let students access full electronic textbooks, read digital notes, and search for specific words and phrases. This isn’t the first instance we’ve heard of eBooks and eBook readers targeting college students—not long