Wow! This post is succinct, informative and precisely helpful. Thanks, @charles1 for sharing...
These miscreants need to be hushed with practical counter-actions, just as you've suggested in the concluding part of your post:
As a community we should stand together against these scammers by exposing them via our posts, flagging them and reporting them to steem abuse and steemcleaners
Point, we have to be careful and spread the news...success
Precisely.