I do not see enough evidence available from the merit history. Can you expose your ground for the claim. I see one user down the line suspicious though...
Red Flag
winterrose, exchanged 50:40 merits with valtin
cryptoMihail > dance2009 > winterrose > Go back to my 2nd line. This is how I discovered it.
Update:
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LOL you are the one bought crypto____ on the table. So, members are now more aware 
It was a good catch by the way.