Used to refer to an ancient chat protocol invented back when Internet sites started appearing, the mighty Internet Relay Chat, or IRC.

Some people think it's outdated because new technologies, such as Slack, Discord, Mattermost and others supposedly provide more features and are more user friendly than the old protocol.
Hey! Stop using that merivingian protocol and use Slack like a real person!
by dibriringman January 26, 2018
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