Well, the "support" here is just much more visible than everything else that we do. We provide support over as many channels as possible: we employ full-time folks in #stripe on IRC, we monitor Twitter, we send thousands of emails every day, we're rolling out phone support, we chat with customers on IM -- and, yes, we reply on HN. Obviously nobody should have to post here, but we'll certainly respond if they do.

Fraud-related cases are particularly hard, by the way. Thousands of people try to defraud us every day. (I guess it's a consequence of being highly-visible and easy to set up.) And so the support for those cases has to be handled a little differently.