6000 active users max (30% of 20,000 users) 6000 active users sharing 5 items a week (I guess it should be a lot more and you get more than one thing done each

6000 active users max (30% of 20,000 users) 6000 active users sharing 5 items a week (I guess it should be a lot more and you get more than one thing done each day) = 120,000 messages in a month, roughly what the graphic implies