"I'm not saying Clojure sucks, I am just saying that it's not mainstream.", to be frank, thats not what you said; "... ClojureScript, a LISP-like language that nobody knows.".

Saying its not mainstream is no problem, but it tells you nothing about the quality of the language. What i do find problematic is that you are changing your argumentation from one comment too another. Clojure is a lang several people know, judgeing by books is a poor comparison as we can limit too the past year and compare and the difference would not be as stark, as you try to present it. Clojure also got 80 (?) books published in less then 2-3 years since its its rather quick breakthrough. There is no need to even try and claim "nobody" knows clojure, or "it's not mainstream".

> ClojureScript even less so -- it's an offshoot of Clojure which was designed around the JVM, not browsers.

Clojure was designed as a Lisp friendly to it's hosting environment. JVM implementation is probably not purely accidental, but it's not the whole of original design either.

And as I write this comment here I might as well add: non-mainstream languages are in many, many places a competitive advantage for those who use them. I know, use and frankly like many non-mainstream languages and the ROI of learning them was universally higher than with the most popular languages.