I use Stripe on our website for payments and it's beautiful. I agree that Stripe is still not that well known outside tech/geek circles. But it will be very useful for one-time payment type of websites/blogs and I'm sure it will give lot of brand lift to Stripe in non-tech users.

To Stripe Folks: It would be great to have "Powered by Stripe" badge so that developers can show that payments are taken care by Stripe.