Lukas L. R. is a user on mastodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
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What's the green check mark all about?
@annatarkov People just add them to their names so it looks like a verified account on other networks.
By the way, welcome to Mastodon :)
@LukasRos So I've been advised. Funny :)