You might want to put a warning on there saying that it will submit any forms it can find a LOT.
Also, on the waiting screen, while it's running tests, I filled in the form and it's had an iframe drama.
https://www.dropbox.com/s/7rofi17cjormgav/Screenshot%202016-...
And thanks for the info on the iFrame - I'll look into that as well.
And thanks for the info on the iFrame - I'll look into that as well.