Simple. Clean. Works.
But, I'm still not sure when I would use it. I saw on http://jotonce.com/about/ a few use cases but I can't say that I've ever needed something encrypted. This is basically an encrypted etherpad right?
Also, what is the difference between a 'passphrase' for a notepad and just a custom url key? Anyone can just type in things and try to guess the passphrase. Is it really any more secure than what other online notepads did with unique urls?