Well, let's be clear, the Alpha interface for developers building HTML5 apps got launched at the WIP Connector "Muther" event last weekend at the Computer History Museum.
You can try it out at our developer site: http://dev.viafo.com
The UI isn't quite ready yet and we've some features to add. But our reference apps, like "Kittens!" will get you on the way.
The winner of our $500 prize for the best app using Viafo's Gateway, Wombat Mobile's DVD Collector, was quite clear that this was the easiest way to add social and location features to an app that they had come across. It took about an hour to integrate and get Facebook working and then Twitter just worked to!
That's what we planned from the start, and it's awesome to see it working like that.