gregbell is a user on octodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
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First time I've been on a social media network early enough to get my real name.
@gregbell same.
@gregbell You will be able to have your name even way later because it's a federated network. If your username is taken in an instance, just try to register in another instance ;-)
It works like mail : if user@gmail.com is taken, maybe user@yahoo.com is free.