I've always wondered where do some of the most popular niche websites out there get their photos from? An interior design related website for example, there's a popular one, fresh home dot com, where do they get all those nice high quality photos? What about travel websites? A post about 'the most visited places in europe' for example. Which would contain beautiful images of natural landscapes and cities... I know there might be some places out there which offer free photos (no copyright), but still, to run a successful website which posts 2-3 times a day, you would have to get an enormous amount of pictures.