"Why Concatenative Programming Matters"

I enjoyed reading Why Concatenative Programming Matters. I'd like to do more with Factor sometime. Is it still under active development? I see that new binaries are still getting generated for it anyway.

"https://evincarofautumn.blogspot.com/2012/02/why-concatenative-programming-matters.html" >url http-get* length
...
261104

(This seems to work. Am I leaving extra stuff on the stack?)