The social graph era started with Facebook's News Feed.

• A. False
• B. True
• C. It began with Instagram
• D. It began with Twitter

Answer: (B)

The idea being tested is how content discovery shifted to a social-graph-driven, personalized stream. Facebook’s News Feed did more than show a list of posts; it tied what you see to your relationships and interactions, turning your network into a living feed. Launched in 2006, it introduced algorithmic ranking that surfaced updates based on factors like how closely you’re connected to the author, how recently something was posted, and how much engagement it received. This made your social graph—the map of who you know and how you interact with them—the engine behind what content rises to the top.

Because this feed-centric, socially driven approach became the model many platforms emulate, the social graph era is closely associated with Facebook’s News Feed. Instagram and Twitter later adopted similar feed concepts, but they did not originate the era. So the statement is true.