Looks cool! Simple to say the least, which is not easy to do!

But I'm worried about something. The credit card input on the payment page shows a lock even though the form is NOT submitted over HTTPS... that makes it look like you're blatantly lying to your customers. Am I missing something?

EDIT: I was missing something. While the HN post links to the HTTPS version, I somehow ended up on a non HTTPS version of the site at some point. Which seems to allow sending CC information over a non encrypted form.