Some additional points: - Be careful with companies that don't sell the API or SDK as a product (Twitter, Google, Faceboook, etc.) - Watch out for companies t

Some additional points: - Be careful with companies that don't sell the API or SDK as a product (Twitter, Google, Faceboook, etc.) - Watch out for companies that don't like to publish roadmaps and makes APIs and SDKs deprecated or obsolete with little warning (Apple, and more recently Microsoft)