Its becoming commonplace for Stripe and PayPal to sort of 'rule' the online payment arena, but there is a slight catch 22 in that PayPal and Stripe have such easy integration built in by design where other gateways such as USAEpay, Authorize.Net and NMI are reasonably popular with more traditional businesses and many people are unable to learn to integrate them.
I'm not sure I have a whole lot of use for USAEpay integrations beyond 1 single project I'm working on now- but I know dozens of people who could benefit significantly from that particular integration.
I just wanted to voice my request on that particular Zapier integration