What is Twitter?

Twitter is a social media platform that, as of mid-2026, has seen a significant decline in user growth and is noted for its influence among elite, early-adopter groups rather than the broader public. The main thread in the material tracks its shifting role and perceived stagnation.

• May 2026 - Harry Stebbings said Twitter’s growth has fallen off, shrinking 50% since Elon Musk bought it.
• Jul 2026 - Amjad Masad said Twitter’s influence is amazing but tends to be elite, inside-group influence, unlike Instagram, Facebook, and YouTube which reach the early majority.
• Jul 2026 - Amjad Masad said X (Twitter) is very good for Silicon Valley, tech, and ingroup messaging, and for targeting early adopters, but not for reaching late adopters.