is a recommendation engine a la Pandora or RDIO, but for the visual arts. Melena Ryzik, in The New York Times:

An extensive free repository of fine-art images and an online art appreciation guide, it is predicated on the idea that audiences comfortable with image-driven Web sites like Tumblr and Pinterest are now primed to spend hours browsing through canvases and sculpture on their monitors and tablets, especially with one-click help.