Social Media By MD17 Jan 1, 1983 TCP/IP Adoption (Foundation of the modern internet) 1999 Blogging Platforms (e.g., LiveJournal, Blogger May 5, 2003 LinkedIn Feb 4, 2004 Facebook Feb 14, 2005 YouTube Mar 21, 2006 Twitter (now "X") Oct 6, 2010 Instagram 2011 Snapchat 2016 TikTok (originally Musical.ly, merged in 2018) 2020 Nostr 2021 Bluesky Social 2022 Mastodon