Doesn't work. "This app is in development mode and can't accept more users. Contact the app developer and ask them to use the Dropbox API App Console to apply for production status."

Bummer.

I tested it can work now.

I'm apparently very bad at choosing site names or there's something wrong with that piece. Seems that no matter what I choose for a site name, I'm shown a message stating that I can't use that name.

I'm getting the exact same "error", and if I enter a new one and click "Create", it doesn't show anything different (even the error message states the previous name), but if I click the link to add pictures, it just opens a new tab with the same page... I believe this is still an unfinished product. A little more info would be much appreciated.

I think there is an error, I am getting the same thing, sorry if you check http://foliopanda.com/test_site this was working.

You should post up an FAQ or more information on how this works before asking users to login with their Dropbox account.

No example site?

It's a pretty small scale project, here's a sample site: http://foliopanda.com/test_site