Important: This whitepaper applied to Internet Explorer 8 Beta 1, and has been removed. For current documentation, please visit the corresponding page in the Internet Explorer SDK:
Subscribing to Content with Web Slices WebSlices are a new feature in Internet Explorer 8 Beta 1 for Developers for Web sites to connect with users by allowing users to subscribe to content directly within a Web page. WebSlices behave just as feeds do, where clients can subscribe to get updates and notification of changes.
[Update: 2 April 2008] Fixed typo in code sample: Changed 'ref' to 'href' in <a rel="feedurl" href="auction.microsoft.com/item.xml">Subscribe to WebSlice</a>