I second that.
Non-technical work (for peanuts, or even pro-bono) is almost like a vacation. In fact, it's better than a vacation...
When you're on vacation, your mind goes idle. When you're dabbling in non-technical work, your mind gets an exercise in unused areas.
While coding full time, I have worked a few days here and there for a literary magazine, college radio station, ski patrol, and other random non-technical organizations.
It can really help you remember what it's like to have a life.

That depends on what "the concept" is. If it's social networking with pastel colors, I agree: that was a fad.

But I think the concept of web-apps is actually highly desirable. Being decentralized lets you (and others) access your documents from anywhere. This facilitates collaboration and reduced your dependency on your physical computer.

The only down side I see to a pure web platform is speed, which is a temporary setback. We'll get there. I imagine that eventually we won't be able to distinguish the connection between our computer and our ISP from that between our chipset and our NIC (for large values of eventually).