Sorry we've been kind of quiet (we do read Hacker News, though). We're just working hard to implement the feedback we've been getting from our existing users, and we want to make sure our product scales well and gets better as new people use it.
Here's a question: any chance you would be interested in having us watch you integrate Stripe? We've been doing this lately to try to make sure our first-run experience is really good. Send me an e-mail (saikat@stripe.com) either way.