Hamish is a user on mastodon.cloud. You can follow them or interact with them if you have an account anywhere in the fediverse.
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How does this system handle unique usernames? It seems like a flaw in the system if other people can take unique-seeming usernames on other servers. Will this network be overrun with impersonators?
Where my head's at too @mathowie - am working on the assumption the federation aspect at least deals with it? May be worth registering on another server to test it out...