Preface

The Internet is a thriving and dynamic ecosystem. Living and playing within this ecosystem are many world-class services, all offering world-class technologies. Think about the massive social graph that Facebook hosts, the most up-to-date mapping system proudly owned and operated by Google, or the ever-growing professional network that is available from LinkedIn. All of these companies, and more, are presenting their world-class technologies for the world to use!

Until recently, it was very difficult to access these technologies in your own applications. Each company would create their own protocols for how to access and leverage their respective technologies. You may have heard of Yahoo!'s BBAuth, or Google's AuthSub. These are just a ...

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