From the e-mail I received notifying me of this Give-A-Way of the Day

May 7, 2013
iResizer enables new smart ways of resizing images without deforming or cropping the content. It can scale an image without changing important visual content such as people, buildings, animals, etc. While normal resizing affects all pixels uniformly when scaling an image, iResizer resizing mostly affects pixels in areas that do not have important visual content.

It also can be used to remove portion of the image in a consistent way.

If you are Mac OS user, please get the installation materials here (file size: 7.49 MB)