I have a client that manages and resells domains to their hosting customers. Currently, they just purchase them from a registrar and then bill their clients and do it all manually! Does anyone know of a registrar with a good reseller API? The only ones I've been able to find are WildWestDomains (part of GoDaddy), eNom and ResellerClub. Anyone that has any experience with any of these, I'd appreciate it if you'd drop me a note with your experience.