Social Computing 

Social Computing, also known as Web 2.0, is based on creating or recreating social conventions and social contexts online through the use of software and technology. Microsoft's social computing tools are delivered as part of the collaboration infrastructure and integrated by design with Microsoft Office SharePoint Server 2007 to help reduce costs and complexity while improving privacy and security.

SharePoint Social Computing Mini-site 

 SharePoint Social Computing Mini-site  SharePoint Social Computing mini-site features a spotlight on how the social computing capabilities with SharePoint empowers people with new ways to innovate, connect, and create value. Learn more about what features are available and how other organizations, such as Electronic Arts and Universal McCann, are achieving the benefits of using SharePoint for their social computing needs.
 

Additional Resources 

Tips and Tricks–Using Blogs in Windows SharePoint Services 3.0 This document provides answers to commonly asked questions and includes useful tips and tricks for using blogs in Microsoft Windows SharePoint Services 3.0.