Nice to know that java isn't too hard to access, not that I expected it to be.
As for hosting, I'm currently using dreamhost. They provide support for python and perl via fastcgi, so I've been looking for a lisp option that could leverage that. Most of them don't have much in the way of libraries. And I like arc. So the option of using arc with java libs seems like a plus. How hard do you think it would be to write arc's web tools based off of fcgi? Unfortunately I don't even know what it takes to run rainbow via the jvm on a server, but I would presume that it's possible.