What would it mean to have a stripped down social network that was also secure? It would look like Tuenti, the social network out of Spain. To give an example of how seriously they take security, the Tuenti API is closed because "of our efforts to be the most private, secure social network on the market..." But if you play nice, they can make exceptions for commercial apps and games they have tested.
HootSuite, a social media management tool for web and mobile, uses a lot of APIs. Now, it also provides one, the HootSuite Engagement API, which the company unveiled today. The new platform allows developers to create, schedule and organize social messages and accounts.