You're right that most existing web application frameworks (targeted at lisp or otherwise), use some sort of server side state mechanism. But that is not to say

You're right that most existing web application frameworks (targeted at lisp or otherwise), use some sort of server side state mechanism. But that is not to say, that a rapid prototyping framework couldn't be made, which used solely client side state. Anyway, I am of course putting it a bit on the extreme end here, but in principle I stand by it. Continuations are but an elegant hack; I might prefer it over other similar hacks, but I'd rather not have to use it at all.