It was only a matter of time. For years the telecomms have locked out developers with the requirement for proprietary code signing and other barriers to development on mobile devices. I'll gladly support the Google effort including subscribing to their service if only to show support for "breaking" the monopoly held by the telecoms. Mobile devices should be no different than PC's in terms of development. There's just too much potential that has been denied in the name of "security."

I am familiar with OpenMoko but the device base is still weak and it doesn't support windows mobile either. For true ubiquitous computing, you need all major OSs supported and a wider device range. These guys have a great vision though and definitely predate Google's announcement. But even before OpenMoko, Voyager which used to be an Objectspace product, has been going this route for years. From what I've seen it supports the widest range of OSs I have seen and is Java to .NET agnostic. But they still aren't on CLDC phones, so I'm going to hold off on a recommendation. But they have P-2-P and P-2-Group publish/ subscribe which I haven't seen from anyone else without proprietary hardware. recursionsw.com

They could call it OpenMoko and then a lot of the work would have been done for them already - here's the link: http://OpenMoko.org