We're in private beta in France and Ireland. (I work at Stripe.) We try to make sure that things are very comprehensively tested before we allow public signups.
Great news, although I work now for a somewhat competitor.
Anyway I do more and more api for my personal projects (thanks to AngularJS and mobile) and the Stripe api & docs have been my main inspirations and technical references.
https://support.stripe.com/questions/what-countries-does-str...