I think it’s much easier for you to understand how Zemanta works by clicking this demo of  their work. Basically, Zemanta does the dirty work of finding related photos and links based from what you write in your post. For example you’ve been looking for a good picture that would fit in your topic and you’re having difficulty in looking for one then  Zemanta provides a list of photos that you can select in your posts. There’s also related articles and links that you can choose if you need one. Copyright matters are not a problem, all you have to do is concentrate on your writing. What really cool about this stuff is that you can drive more traffic in your site because zemanta would link to some of your articles if a user is in need of other references too.You can also  practice of internal linking  since zemanta will provide you a related link to your previous posts. Before I forget it’s compatible to almost all browsers, just download it in their official site.