Social networking and photo-sharing websites retain photographs deleted by users, reveals research by Cambridge University. Researchers uploaded photos on 16 popular websites - including Facebook, Yahoo's Flickr and Google's Picasa - noting the web addresses where the images were stored and then deleted them. The team said 30 days later, it was able to find them on seven sites, including Facebook, using the direct addresses even after the photos appeared to have gone, BBC reported Thursday. Facebook, however, says deleted photos are removed from its servers "immediately". Joseph Bonneau, one of the PhD students who carried out the study, said, "This demonstrates how social networking sites often take a lazy approach to user privacy, doing what's simpler rather than what is correct. "It's imperative to view privacy as a design constraint, not a legal add-on." The Cambridge University researchers said sites such as Flickr, Picasa did better and M...
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