This could be incredibly useful for full stack developers that need to do mockups quickly, or have clients that are constantly calling them and asking questions like, "Can you build me something like $data_driven_webapp_dujour".

If your client just needs something small, you could host it on Firebase.

I also like the possibility of hosting an entire data driven application on Amazon S3 or Rackspace Cloud Files.

Looking forward to giving it a try.