Hi all, I'm brand new to this list and joining late in the discussion, but am I to understand that there has been some struggle with the choice of UI layer for the proposed application? If that's still up for debate, then I'd like to suggest that you look at Apache Pivot. I'm on the PMC for Pivot, and I think this could be a good opportunity for our two projects to jointly benefit. From what I've read on the mail archives, it sounds like this app would be very cool, and over at Pivot, we're looking for a cool app to showcase what our platform can do from a UI perspective in order to foster adoption of the platform.
Thoughts? -T