I agree that the desktop metaphor needs reworking, and that it's a good idea to focus on the communications aspect of computing, since that seems to be the primary use of computers nowadays. However, I don't think contextual menus (especially using a right- or control-click) is a good idea. It would be better if Spring also organizes things for you, and shows you more information without having to dig through menus. Anyway, keep it up!

And as a side note, incidentally, Microsoft/Windows seems to be working on making things easier by moving away from desktops as well ("task-based"). Hate to admit it, but I think their concept is a good one...