If you have a website that contains user generated content aimed at technical folks what looks nicer (and maybe what are some more options?):
1. GitHub's implicit username: https://github.com/foo
2. Medium's @username: https://medium.com/@foo
3. Old style homedir (eg tildeverse): http://tilde.club/~foo
4. Explicit user folder: https://example.com/users/foo
My preference is not to use implicit usernames since you then would need to filter against a blocklist (something like https://github.com/marteinn/The-Big-Username-Blocklist). Anybody have any opinions?