Impersonation attacks happening on Bluesky with its domain integration stuff https://tedium.co/2024/12/17/bluesky-impersonation-risks/
This is one of the reasons @spritely has gone all-in on Petname Systems as our approach https://spritely.institute/news/two-petnames-papers-are-released.html
@cwebber #Wikipedia discovered the risks of impersonation a couple decades ago. That's why using real names is generally discouraged, *especially* for celebrities. For the longest time, non-pseudonymous accounts were instantly blocked in many language editions, until a process was established for those who wanted more official-looking usernames. (It's only worth it when necessary to declare COIs.) https://en.wikipedia.org/wiki/Wikipedia:Username_policy#Real_names
Funnily, here's a 2004 proposal by @evan:
https://meta.wikimedia.org/wiki/Real_names