Photrade is a way of not just protecting your images but also allowing you the oppportunity of making money from your images. Photrade has custom watermarking, size limiting, and protecting your images from appearing on other sites. To make money from your images, you simply upload your images. You can then look through the images by publication channel or category, and purchase the images. There are currently quite a few photo sharing websites that allow you to purchase prints from the owner. Some have been successful, others were not so lucky.