Communication · 2004
Social networking (Facebook)
Profiles, friends and feeds put social life online for billions.
Following SixDegrees (1997), Friendster and MySpace, Facebook launched at Harvard in February 2004 and passed 1 billion monthly users in 2012. Social platforms reshaped news, politics, advertising and personal relationships, and by the 2020s over 5 billion people used them.
What it built on 2
Related measurements
The dashed line marks when it first worked.
Share of people online Latest: 73.6 % (2025) Source: Our World in Data