I wanted to say thanks for the comments. This is just a beta product that we're experimenting with. As many people here are pointing out, there's still a lot we want to fix and improve (e.g. the button text and how validation works). We definitely welcome any feedback, though -- especially if you go to implement it on your site.
This is awesome guys, great work. One quick nitpicky thing that I don't think has been addressed yet: In Safari after the cancel button has been clicked, clicking the button fades in, then out, and in again before you can enter anything. Edit I'm using Safari 5.1, doesn't seem to happen in 6.
Great work but I do have questions about the security implications. I'd love to have a chat if you have some time. I'm trying to do something similar (button popups and involves money) but we're non-competing.
I wanted to say thanks for the comments. This is just a beta product that we're experimenting with. As many people here are pointing out, there's still a lot we want to fix and improve (e.g. the button text and how validation works). We definitely welcome any feedback, though -- especially if you go to implement it on your site.