This is really nice. I went ahead and made a survey (easy process!) but once I received my embed code I was surprised. The script generated when I made my survey is named in a very predictable, incrementing format. I looked at a few others' surveys by changing the #.js in my embed code.
There needs to be some kind of protection to at least keep people guessing numbers, because I don't want people embedding my survey on their site and interfering with my results.