While this app is useful for all iPad users, CTOs will find it a core necessity especially who are always changing device context - iPad, iPhone, Desktop, Notebook. The new iPad version is easy-to-use and highly productive and acts as a universal briefcase. Ironically, with DropBox, the briefcase is inside the iPad, not the other way around. To some degree, Box.net and DropBox overlap functionality but that's only if you use them for the same purpose. I recommend using DropBox for documents in progress and resources that you need to perform tasks. Box.net is the app (and service) that I recommend for curating, publishing, and distributing the results of your work.