A few killer apps I've been thinking about.... Some are partially built.
Online bookshelf. Safari at oreilly.com has the concept but it's missing the feature that would get me to subscribe. I have about 50 O'Reilly press books sitting on the shelf. If I could use ISBN or even answer a randomly selected question from the text and register the print copy for online access I'd subscribe in a minute. The savings in the weight of my backpack and the ability to access the books from anywhere I'm online would be well worth it. Read more about Killer Apps