Timely, no? Just as the 2010 back-to-school season really gets rolling (and that dreaded Fall semester arrives to pester you to death), Barnes & Noble is looking to become your go-to place for eTextbooks, study tools and pretty much anything else in the related field. Up until now, there's been no all-encompassing eTextbook delivery method, and the few options that are out there are generally poorly thought out and shockingly spartan. 'Course, B&N isn't coming right out and saying it, but why else would you create a comprehensive application suitable for Macs and PCs that not only puts digital textbooks into the hands of students for up to 40 percent less tha