Astronomy Images Fotos Search Image Library offers over 1 million images in its extensive online archive, including Art, photography, clipart, illustrations, footage, and maps. It offers your users the opportunity to view world-class photography and art free of charge. It is the digital, online equivalent of a conventional art museum. Browsing through the library is free, and there are no access charges, registration requirements, or usage limits. You even have the opportunity of paying for the rights to use the images for your own purposes. This looks like a great site to browse and, for those astrophotographers amongst you, a place to become one of the paid contributors.