If you have created ’til now web-animations or browser-games with flash, will run into trouble when accessed with iDevices (iPad, iPhone). A solution for this hurdle will be HTML5 and CSS3.
A lot of samples (http://labs.adobe.com/technologies/edge/resources/) are available online. The tool looks very promissing. Event the first Game-developments based on Edge has been shown online: http://mediarain.com/edge/
The only disadvantage:
Interne Explorer 8 – which is still widely used – doesn’t support the animations created with Edge.