Favorites and Add-Ons
Web slices are like an enhanced RSS feed. They allow you to check frequently updated pages directly from your Favorites Bar. Microsoft has created web slices with several convenient features, including a one-click preview of content.
Not all webpages have web slices, so the easiest way to search for and add them is in the Internet Explorer Add-ons Gallery.
If you're browsing a page that has a web slice, the RSS button will change to the green web slice button. Additionally, you can sometimes access the web slice button directly on the page as seen in the image below. Whenever you see the green button, simply click it to add the web slice to your Favorites Bar.
When a webpage is updated, the web slice's name appears in bold, making it easy to know when there is new content. You can click on the web slice to see a quick view of the updated information. If you want to see more, click on the links to open the page.