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Wave?

Yes, Wave is one such synonym.

We need such kinky ideas/terms to make it aligned and synonymous with a microblog.

"post" does not sound like a thread, blurb could be

See, we should not go into entirely by meaning. The new generation loves kinky terms/ideas that align with the original meaning of a microblog.

e.g. Tweet/Thread/Wave, they do sound more appealing despite being different in their meaning.