I've looked at some basic library code that is implemented as part of the compiler, and... well, I'm not sure about this. The syntax does not really seem reminiscent of concatenative languages ala FORTH, so in what sense is this a "concatenative" language? The documentation doesn't say - there is no documentation to speak of. I'm not going to dismiss the effort that has been put into this already, but I'd sure like to see some more overall polish applied - then it could even be reposted to HN, and perhaps garner far more useful critiques.