JSON responses are done. Delete URL's are now created for each upload, they work basically like the delete password except that they are uniquely generated for each upload automatically. If you don't use the JSON response you'll see the delete URL in an HTML comment when the link is made.
Edit: Also, still no response from the register after a week. I'm planning on settling on a new domain very soon, and on top of that I think I'm going to grab the opportunity to give the site more of a theme to it. Stay tuned.