NewsGator has published a case study of Triple Point Technology's adoption of weblogs, RSS, and news aggregation to communicate within the organization:

Triple Point started with a simple goal: "The idea is to free some of our content, expose it via easily searchable XML and HTML via HTTP, and reduce the amount of information ‘hunt and peck’ that currently goes on, thus increasing productivity and improving the quality of our work," says Allie. They wanted to leverage the fact that employees already spend significant time using Outlook, and also build upon intranet work they had already done with SharePoint.

The solution was multi-fold: weblogs were created for employees to publish to, business systems were modified to leverage RSS, intranet sites now notify via RSS, and NewsGator delivers the content to the desktops.

...via The Shifted Librarian