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Yes it will be. There are more commenting on threads than posts.

It's empirical. So we can describe it from our experiences. I have personally experimented with it.

While long-form has its relevance, people will look for more succinct and to-the-point content in the form of threads.

Well some threadcasts can get long, look at Khal.. LOL

He writes a book in threads.

Yes, this is why it is kinda counterintuitive not threading at this point