Link Details

Good question. But isn't e.g. Ruby also mostly use in the RoR sector? So, If Ruby were such a great language ...

What the hell does this even mean?

Ah, a link with an inadequate description pointing to a somewhat shallow argument... sorry, voted down... waste of time.

JavaScript (through Rhino) powered the old Jot on the server-side, Dojo's build system uses JavaScript through Rhino to concatenate and compress files for deployment.

It's probably used a lot of places. Not knowing where doesn't change that. And the fact that there are run-times for it quite obviously means that someone is using them. It's insane to argue that a run-time exists with no one using it.