If the old one didn't do this, there's yet another reason to use it...
I still believe that part of the reason a lot of sites are moving to JS-only SPAs and the like is that it becomes much harder to block things like this. Regardless of sandboxing, the idea of letting a site execute Turing-complete computations on its visitor's computers, just to display what could be done without, is quite repulsive.
If the old one didn't do this, there's yet another reason to use it...
I still believe that part of the reason a lot of sites are moving to JS-only SPAs and the like is that it becomes much harder to block things like this. Regardless of sandboxing, the idea of letting a site execute Turing-complete computations on its visitor's computers, just to display what could be done without, is quite repulsive.