Put it in Chrome and make awesome applications with it, everyone will follow.

Nobody thought JS and Ajax was a serious thing until Google Maps came about and everyone's jaws dropped. Despite all the academic or theoretical benefits async requests it might have had, they didn't become popular until a killer application came about.

I am also thinking Dart for Android? I wish they had Python for android, but oh well, I understand it was much more of a political thing, but I can see Dart+VM being that platform.