Hotlinking, which is oftentimes labeled bandwidth theft as well, refers to linking to images which are on another website. In simple terms, if you have a website with some images on it, somebody else could also create a website and rather than using their own images, they could put links straight to your images. Even though this might not be such a serious problem if you have a smaller personal website, it shall be something very serious if the images are copyrighted, as someone may be trying to copy your website and cheat people. If your hosting package deal has a restricted monthly bandwidth quota, you may run out of resources without getting real website visitors, simply because the traffic will be consumed by the other Internet site. That is why you should consider shielding your content from being hotlinked - not just images, but also documents, because in rare occasions other kinds of files are linked also.