How to fix the username system

GUEST: I recently decried the “first come, first served” username system that so many digital platforms adopt. In response to my post, a lengthy Hacker News discussion was born, and I spent a Sunday answering thoughtful emails and Tweets. Readers asked questions, shared ideas, and pointed out many novel username systems in operation. Below are follow-up notes edited into a Q&A. Thanks to everyone who chimed […]