Seconding Arkash. It is a HBO produced poster but is part of their confusingly titled "fan poster" series.
I think they are aimed at fans of the show but targeting a specific portion of your audience without bleeding out into your potential viewers is not that easy with social networking making sharing of images so easy. I think this image has the potential to turn away viewers who might have otherwise been drawn in by the DVD marketing. I agree that it is intended to be circulated amongst existing viewers but putting it on the shows facebook page might widen the exposure a bit too far.
The image is now freely available to be abused by internet trolls which I don't think is the best marketing strategy; at least require the industry of taking a screenshot of them!
Edited by opark77, 16 March 2012 - 03:49 AM.