We are indeed working on bringing this to IE as well, but we're waiting until at a later stage. Keep in mind that this is all still alpha code.
As jeresig pointed out, Canvas is really only used for calculating click-through maps on objects which can be ignored / done server-side. It should be relatively easy to fix remaining bugs in IE.
hey there, the punchline 'does it scale' in this particular case was more referring to the client side of scaling rather than the backend. That being said, we are doing some pretty crazy stuff in the backend involving server-side JS to get things up to speed, but still need to collect actual numbers.
Neat! I hope we get to hear some details on this in the future! I was impressed with the video, can I ask what kind of machine the demo was recorded on? :)
Yes we're using node.js on the server-side with a combination of long-polling and normal polling (for slower devices like iPhone). I can't talk about any other server components as much of it may change. We'll post details when we think it's good to go!
As jeresig pointed out, Canvas is really only used for calculating click-through maps on objects which can be ignored / done server-side. It should be relatively easy to fix remaining bugs in IE.