2014 stellar launches community, issued free of charge to users associated with your facebook account. Thus the status of the fraud takes place very much, 1 person can register thousands of account and receive and so many stellar reviews. But that stellar must be evenly distributed to users.
2017 stellar returns, and they provided free of charge to users in the coming June.
And I wondered that, whether stellar are the methods to prevent cheating (link to facebook, sms verification, or many other ways...)
