Spotify was one of the early apps to tap into the Facebook's Open Graph platform, which Facebook introduced in fall 2011. The Open Graph is just the latest expansion of Facebook's social graph.

There are two key lessons in this history, leading up to yesterday’s bombshell unveiling of Open Graph. The first is Facebook’s efforts to build a true social web infrastructure, something ...

Facebook's got 60 new Open Graph-powered apps for users to install and use, with the promise of approving new Open Graph apps from developers. Josh Lowensohn Former Senior Writer Josh Lowensohn ...

The graph database was originally designed to store networks — that is, the connections between several elements such as people, places they might visit, or the things they might use.