I would be very interested in knowing more about what exactly his problems were. What APIs what he trying to use? I work on backend systems and build APIs or related systems everyday so getting a rant is not of much help. :( * Auth Tokens - needed. * Code samples - good place to get started. * Documentation - really, I am yet to see a good API without documentation. * Blog - Okay not always helpful but other times its a way to tell users about new features, downtimes, changes. * business development/relationship/ecosystem - not important but can be nice to have in case you get stuck or are building something that is more than just a crappy weekend hack.