Eternal September

Eternal September or the September that never ended[1] is Usenet slang for a period beginning in September 1993,[2][3] the month that Internet service provider America Online (AOL) began offering Usenet access to its many users, overwhelming the existing culture for online forums. https://en.wikipedia.org/wiki/Eternal_September aka TheSeptemberThatNeverEnded

(When AOL went public in 1992 it had 200k subscribers. In 1995 it had 1M, in 1996 it had 5M.)

(In 2010 Twitter had 54M MAU.)

cf social warrens