Earlier quoted context omitted.
If you used this at all, it was in a Chrome-only app; this is pretty far from mainstream. A good rule of thumb seems to be to use what everyone else uses, and make sure you're always ready to ship another version. People expecting compiled apps to survive unchanged for years are out of luck.
Not true. NaCl is pretty big in some areas of Consumer Electronics.
https://en.wikipedia.org/wiki/Sodium_chloride#Miscellaneous_...