If you've ever tried to design a website or blog, you've almost certainly felt the need to add images to your creation. It can be easy to see the Internet as a free-for-all, but images belong to the people who created them. Staying legal means you'll have to either create your own images or buy them from stock sites. Fortunately, there are a number of sources for free images, and we've collected them here. So read on for 100 sources where you can find free stock images: and don't worry -- they're all legal!