Link to scammer's Sythe profile: http://www.sythe.org/members/284410-mrjacktheshark.html
Briefly explain the trade: So I was selling 3m for .55/m. He added me and said he would pay .80/m, and since he had some vouches I believed him. I gave him the money, and he didn't go through.
How they scammed: Already explained above.
Proof that you were not talking to an impostor: Link to my post where he tells me to add him: http://sythe.org/showthread.php?t=1179424
(Look in the top left corner to see the address.)
Video of me showing that I traded him the 3m:
Picture showing that my balance is zero: http://tinypic.com/r/2gtpy84/7