Microsoft introduces web slices in IE8. With Web Slices, is the possibility to keep up with frequently updated sites directly from the Favorites Bar. When Web Slice are available on a page, a green Web Slices icon will appear in the upper-right hand corner of the browser. You can then easily subscribe and add them to the Favorites Bar or delete Web Slices.
Web Slices can be found in the Internet Explorer Gallery where you can download and find new entry. If you want to remove, right-click on your Web Slice and click Delete.