It is definitely impressive, and great to see as its own thing.
It would be nice to see more research on usability though

However, getting back to the nokias, it would be nice to see a commercial section somewhere for it. I don't intend to write commercial software (not that I intend to write open source either - I am too lazy for that!), maybe just a few games or utilities (although happy to join with others on something bigger) . Having said that, I don't even know if there is a way to protect commercial software, like there is on the palm. I suppose you can tie it to wlan MAC address.