We need images for many reasons and writing articles for the web is only one of them. But finding the picture with a proper license can be a truly painful experience.
Where can you find completely free, no strings attached photos or clip art? High-resolution images in Public Domain for non-commercial or commercial use? How to protect yourself as an author of the article on possible problems caused by the usage of pictures without a proper license?
Should you really pay 20, 30 or even more dollars for a single photo from stock exchange sites which is used over and over again and won't give you any competitive advantage against thousands of other authors writing for the web on the same topic?
When you start searching for free pictures in Google thousands of results will pop up, yet most of them, including first page results, will be outdated, not free at all or simply irrelevant for your projects. For this reason, I have created a list of 10 best sources (I am talking about groups, not sites!) of free images with additional info you should be aware of!