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Lol, tsū was, unknown to general users, explained as an experiment when they all of a sudden closed their doors without notice.
Loads of tsū family here now.
But the Groups/Communities addition was like the days in the old West when the gov opened up new land to settlers, people stampeded for the "Owner" status of the group's that they wanted because the owner took 50% of all post income from the groups.
You were required to have a balance of $100 in your account before they would cut a cheque, that made a lot of people angry when they closed and didn't have enough in their account!
Pretty shady dealings really.

Interesting background. Thanks for providing info. 50% going to group owner was clearly the wrong number. But I could see concept working and being reasonable if it was something like 5%; as payoff for all the curation work that would be needed to be a good owner of each community.

No obvious reason why steemit.com would shut down in the short term. As long as there is a 9% or 10% inflation rate there will always be some type of rewards pool to distribute. And if confidence in platform grows, the open market price of STEEM could continue to rise which will attract continuing interest for new entrants.

STEEM On !!

Cheers Dave!