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I'm hoping Communities can kickstart a lot of new activity and new interest in Steem.

But it will require some hard work, resourcefulness and creativity to make the best of the opportunity.

I do not know. I think that the communities should have been introduced with Steemit in 2016. The user retention and the user activity would have been better nowadays. A lot of people left (and leaving) Steemit and the Steem blockchain since then. Mostly since the end of 2017.

Better late than never!