I was at demo these guys did for a SV Rails Meetup, and while the basic functionality is pretty damn cool, I have some concerns about the base footprint of appl

I was at demo these guys did for a SV Rails Meetup, and while the basic functionality is pretty damn cool, I have some concerns about the base footprint of applications. The baseline they quoted was 2MB, which may not be much when you're talking about a desktop app downloaded over cable or DSL, but in the mobile space, where (non-iPhone) devices may only ship with 50-100MB of storage free, and many users are served mostly by poky EDGE networks, a multi-MB "hello, world!" seems a bit excessive. That being said, for their core market -- namely, developers porting enterprise app UIs to mobile devices -- I think it could be an acceptable tradeoff for the productivity gain that results from it being "just another browser app".