Someone asked, “Why does the Fediverse need new protocols like ActivityPub when older protocols can do the same thing?”

Interesting point:

1. You can create a federated chat app through email protocols and someone has (Alpha Chat)

2. You can create a federated social network through XMPP and someone has (mov.im)

3. You can create a microblogging service through finger protocol and someone has (happynetbox.com)

Nothing wrong with older protocols!