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that standard exists.

What's the user friendly, normie friendly open source social media service that rivals Twitter and Facebook in usability?

Go to the front page of HN, and view the top post today. That is just one example of software that uses open web standards published by the W3C.

There is a healthy ecosystem of software being designed to conform with these specifications.

Mastadon? Its nearly there anyway.

What are you referring to? I find IRC irritating, personally.