>>17506249From what I remember:
2001–2004: Phantasy Star Online (Dreamcast)
2002–2006: Old online Invision Board forums about RPGs
2005–2010: MySpace
2010–2013: Normalfagging on Facebook
2011–2016: Weird niche hobbyist groups on Facebook
2016: Only good Minecraft server I ever found
2017: One particular double-chan board (not /q/ shit)
4chan was mixed in there at various points on-and-off from 2007 onward, probably forgetting other stuff I used less frequently. I'm too much of a boomer to successfully socialize online now, and just use 4chan for maybe a month or two cumulatively each year, generally with profound regrets.