Facebook’s, according to a survey of 100 developers posted on Hacker News. When asked about integration problems, Facebook mentions came up most, followed by Google and Twitter. Naturally, those three supply some of the most widely used APIs out there. Developers complained about bad documentation, bugs, OAuth and lack of example code. Two complained that Google+ hasn’t got a public API yet. At the same time, Twitter also received the most positive comments of any company mentioned, including kudos for its documentation. YourTrove Inc., the photo aggregation company that wrote the survey, admits it isn’t super-scientific or well-crafted, but it certainly exposes some things platform companies need to work on. And it didn’t even get into business issues.