Stone to Silicon

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.

See it in the living treeWikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

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