Is Twitter Long Form, Short Form, or What?

This article in the New Yorker says that far from being a medium that discourages long-form journalism, Twitter actually is long-form where writers and journalists post links to their detailed stories. So the argument that it can't cite facts and develop arguments also flies in the face of what the author - Sasha Frere-Jones - states:

It's sort of a self-cleaning oven, where the wisdom of the crowd can work out the kinks. 

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