I need to find a way to use 3D graphics on a web browser and I have seen papervision, but this is to be in conjunction with my iphone app Voxel, which already uses OpenGl for the phone. WebGl seems like a better fit.

But is webGl a working thing? The information about it is so confusing, I guess it is not part of people's browsers yet? Is there some estimation of when it will be? If it isn't soon, how do people do 3D on the web now? I can barely find any working examples.

Assuming I try to develop something with WebGl, how do I get it working on an iMac running Snow Leopard?
I didn't see an FAQ, sorry if I missed the answer to this.