BOOKMARKS are normally used for internet browsing. When you are on a certain URL and would like to return to this same page later, most browses like Firefox, MS Explorer and Safari, have a function called "Bookmark". It's actually a placeholder. However, physically, there are other types of bookmarkers, used for promotional purposes. Below are several bookmarkers I have created for various clients. The can be customized.
As you click on the images, you will be able to see the full view.