Hi #Masto,
What makes #Mastodon unique and different:

- There is no such thing as "A" social network called #Mastodon! Instead thousands of independent social networks called Mastodon instances.

- Every Instance has his own server, community, rules, admins & moderation.

- Every Instance can interact with users on other Instances, exactly like email works (you can send an email from gmail to yahoo).

- One Instance can choose to silence or block another Instance (i.e. bad behaviour) @Gargron