I submitted a link to this yesterday, but realized I misconfigured nginx/sbcl and so the "try" page ended up almost crashing the server, so I took it the link down a few minutes later. I'm resubmitting now.
This isn't really substantive feedback about the language, but this is a magnificent bit of fun, even if I can't figure out any time I'd want to use it :)
If anyone has feedback let me know!