the dev.to platform is incredible, it creates a Twitter like atmosphere that's way more sophisticated and generally has more moderation, so there's...
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Makes sense and is probably a direction dev.to team will take it one day.
However, currently the experience is meant for developers. Markdown might scare off non-technical folks. They would have a easier time in medium.
The code is all ready to roll in Github, but you probably knew that :)
IMO what makes dev.to work is the way the community formed and is carefully tended / moderated, which needs the right humans with enough time and excellent empathy.
Until recently I operated / helped moderate a family forum for many years, and that was a similar experience, starting small, existing for the users, not as a funding vehicle for the creators, having a niche topic (larger families).. technically we have now moved to a private Facebook channel 'cause the forum software was seriously old/dead, but the community remains.