This came out in the news recently and I thought it might be of interest to a number of DP members: http://thenextweb.com/media/2014/03/06/getty-makes-photo-collection-available-bloggers-free-charge/#!yEMif "The new embedding feature launched on its website today will make some 35 million images available for non-commercial use to anyone who wants them. That means bloggers—even ones that get revenue from Google ads—can use Getty’s trove of stock images free of charge." The re-use of their images comes with the condition that full attribution is used. They have facilitated this by including an embedding function, which includes full copyright information and a link back to the image’s page on Getty.