http://fasteddie.wordpress.com/2008/03/05/the-daylight-savings-time-warp/
Of course this image is not going to be USED. None of the images can be used if the card gets made into a real card.
The Images under Wordpress are used under licence via Automattic. (the company and their terms, not Automatic the state of Autonomous transfer.) Fast Eddie is actually in breach of Terms by using the image with the Quartz trademark.
You are not Legally allowed to use the image as is. You may use it in its edited form for private use only. Unless this breaches any of this Forums licence I see no issue for use of the modified image for demonstration of an Art idea.
I'd like to discuss the Art thing with SG and probably some professionals in the Industry like Vrt about what is suitable and legal. For now Art is ok if artist is referenced, and original location if aquired publicly is linked.