That's a good point. But LDAP is usually administered by an organization. Most individuals don't have permission to edit their leaf records in the orgs I know

That's a good point. But LDAP is usually administered by an organization. Most individuals don't have permission to edit their leaf records in the orgs I know that do LDAP. So... yeah... depends on what you're trying to achieve. If you want something org-focused and regular, LDAP is good. But if I wanted to publish my own info, maybe putting LDAP-ish records in a dotfile that some server serves out by mDNS would be a decent idea. Corporate guys who freak out over mDNS could just prevent it from traversing corporate owned switches. Everyone else would be on their own to figure out if individuals are leaking too much info.