An interesting tidbit from Mike Gotta's blog; see the full post for context-setting and for Mike's perspective on how both Microsoft and IBM are not leaders on feed syndication
Senior Technical Product Manager for Community and Social Computing
Microsoft SharePoint Products and Technologies
We (the SharePoint team) understand feed syndication just fine, which is why we have RSS feeds for practically everything in SharePoint, and the feeds are easily configurable by the end user if necessary. SharePoint also has a built-in RSS Viewer web part to consume RSS feeds. As for feed aggregation, management, and sharing, we were hoping that the Exchange team would build that, but they had other priorities. NewsGator has been and will continue to be an excellent partner for us in this area.