[magixman]

There are a number of folks who can't install plug-ins because their machine is locked down or won’t because whoever the family friend is who cleans up their PC messes has successfully drilled into their heads the "just say no" mantra for whenever a security prompt rears its ugly head.

I applaud Mozilla for doing something that will make Canvas more universal but I am afraid that for really horizontal applications using one of the compatibility layer libraries is the only sensible approach. Do you really want the first impression of your app to start off with a security prompt?