It's really not a good idea to take images from somewhere, tweak it a little with a Samsung wallpaper and then post it on your fan page. It's likely the original owner of the image will recognise it and kick up a storm, as can be seen in this post here.
Danny Santos, a street photographer, spotted his work three hours after the post was made, and left a comment asking why the image was used without his permission.
Samsung claimed that the image was taken by one of its photographers and was using the image to promote a contest to win its latest NX300 ILC.
However, the EXIF data of the original image found on Santos' Web site showed that it was taken with a Nikon D700, refuting the implication that the image posted on the Facebook page was taken with a Samsung camera (presumably the NX300).
The company has yet to respond to the post, and we have contacted Samsung Singapore for its side of the story.