Who the fuck are you OP? One of the LiveCoin signature campaign participants? You're right, they should not be tagged for wearing the signature but you should be tagged for not having balls to post from your main account.
No, he is shady troll. It's ordinary tactic in russian local: blackmail, FUD, threats, trolling, escalation and others. Holy shit, it's odinary tactic and way of life in POST USSR LANDS.