I think the rating difference between sections "application domains" and "common programming" illustrates clearly what is known as "academia language", i.e. advanced, mature features and lack of real application stories and libraries.
Seemingly some providers banned the whole domain because a suicide themed page was uploaded there. I can access github.com freely at Moscow though atm.
I've used slimv a bit to play with Common Lisp. It's very handy for sending sexps from vim to repl. Not sure about advanced emacs' slime/swank features. I think it's difficult to find a person which used both editors for Lisp coding to make a meaningful comparison.