[kookster]

Many Rails folks have moved on to other things, many of them to Node.js, and in general development is becoming less homogenous (i.e. Go services interacting with a Rails app/middleware, and an Angular.js front-end). This is a good thing; we are seeing people more willing to use the right tool for the job rather than trying to use one language for everything.

[jwarzech]

This. I think of any of the comments so far you express what I'm seeing as well (I know 'use case of 1'). Distributed & modularized apps where each component uses the language/framework best suited for the job.