I guess when several people or photographers got wind of this site and spread the word NupeMagazine(dot)org got a wee bit, err, overwhelmed with complaints/cease & desist notices. Did you notice the ORG in the url, usually reserved for sites that are not for profit. Perhaps they are making the mistake or presuming that because they don't sell the images it's okay to use them.
Despite the claim it was a "search engine to show images", their fb page clearly states what they are about. Yes, I have talked about those wallpaper scraper sites before, they are the one's that scrape content and are full of ads, redirects to ads and some with porn links. People think they can download and use these images and get a nasty shock when they are sent dmca notices or get emails from irate photographers, OR face a lawsuit.