Big growth in Kotlin, Elm, and Elixir language communities on Reddit in 2017

> /r/groovy 1.8k users](http://www.reddit.com/r/groovy)

At first sight, not only has Kotlin grown from 1300 to 8000 redditors, but Apache Groovy has also grown from 1400 to 1800. However, whereas Kotlin has averaged over 100 postings a month, Groovy's reddit site has had a mere 20 postings in the past 6 months. Got to look at more than just number of users because some a language backer can easily twit "hey everyone, go join groovy on reddit and get our numbers up".