wet blanket alert: a modal form with credit card inputs has been done many times before. What is instant or new about this? Kudos for yet another checkout, payment button code snippet?
It turns out that accepting payments vs accepting donations for a cause, charity, political campaign, personal project, etc actually ends up having a different set of needs. And with online giving growing at the rate we see it to growing, a simple / powerful way for any site to collect donations, optimized for conversion on any device, with two lines of code is something we think our customers will find useful.
TL;DR; It would be good to make it more clear to the end user what's new about this. Perhaps a better title for this HN post is "Accept donations on your site without writing code". The word "instantly" obviously never can be true and seems like overhype.