Glad to see some HTML5 game dev articles up. Since this thread is bound to attract devs involved in HTML5 game creation, is impact.js any good? I find Lime.js to be severely lacking in tools to create something like a platforming game (I'd really rather not write physics and collision code).
Am I the only one worried about the 100x Farmville clones that will now be built by 15 year olds and spammed across the social sites. =)
Great tute though.