> A lot of language features that look awesome at first glance just don't scale well in large projects. Often the only way to figure out whether something can scale is to use it in a large scale project.
In general I agree, but I don't think its accurate to extrapolate github stats as an indication of which languages are better suited to large scale projects. (not that I think lisp is good for large scale projects with multiple developers mind you)
Here is a fun link (http://wiki.c2.com/?SmugLispWeenie)