Re: [WTS] [EU] [CZ] 1x Bitmain ANTMINER S3+ avg. 480 Gh/s (WiFi antenna included)
Posting pictures of miner with your forum username and the date in will help 
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Sorry, but I dont know how to add watermark, or what you mean using imgur.. .
Yes same as you've done already but have a piece of paper in shot with your username and date written on.