Social networking is the #1 online activity, used by 1.2 billion people worldwide. Nearly one in 5 minutes online is spent on social networking websites, and 75% of that is on Facebook. Facebook has 845 million active worldwide users. Researchers found the biological signals in the brains of Facebook users correspond to what they describe as the “Core Flow State.” Core Flow is a state that people reach in which their skills are challenged and they are highly aroused and enjoying what they do, a biological signal that makes people want to repeat their experience. Some studies have found flow is linked to quality of performance and quality of life.
Cyberpsychology, Behavior, and Social Networking, Feb 2012