Important point, I hadn’t thought of this. We need to sit down and consider the implications of different methods of browser support and their implications.
I think it’s just too valuable for ease of use and mass adoption to not support existing browsers, and I can’t see how we can mitigate this - except to a small degree, by ensuring that all SAFE URLs behave like a normal URL when using a browser that doesn’t understand them! I refer of course to the following suggestion (maybe I should not have split the topics):
I think we should revisit this once we’ve thrashed out the options a bit more. Then look at the pros and cons again.