I wanted to use a few stock images for my mockups. A friend of mine told me that I could use the images that are a part of press releases of certain products. http://press.ea.com/products/p1407/fifa-13-?type=screenshot
Do these images satisfy the requirement to be used in a mockup that I may make?
If not, could someone please help me with some other sources of such things. I am mostly interested in video games, technology and gadgets.