Chapter 1. What the Social Graph Can Do for Your App
Once upon a time, there were "social" networks that helped people connect with friends. Nowadays, every application and web service can be considered social. Why? Simply put, it's because people like to share. Whether it's publishing a high score in a video game or posting a picture where friends can see it, iOS users have become accustomed to showing their digital life to their network of friends, family, and colleagues.
That network of people is called the social graph. A person's social graph describes everyone he knows and how those people are connected. Since Facebook CEO Mark Zuckerberg coined the term in 2007, the social graph has become more than just who you know. Other "nodes" that ...
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