Hotlinking is a commonly accepted Internet expression for linking to another website’s images. Quite simply, if you develop an Internet site, another person may want to use the images which you have and instead of downloading them from your site and then uploading them to their website, they can simply put links directly to your site. That way, every time a visitor opens their site, the images will be loaded from your account, as a result stealing from your own monthly traffic quota, not to mention the copyright problems which may develop or that someone could be trying to trick people into believing that they're actually on your site. In rare situations, documents and other sorts of files can also be linked in the same exact way. To prevent this from happening and to avoid this sort of situations, you can activate hotlink protection for your site.