Very interesting post today over at the Microsoft Enterprise Content Management (ECM) Team Blog. Adri Verlaan, intrduced a starter kit for SharePoint Server 2007 that helps with the implementation of a taxonomy/tagging system. The kit contains a lightweight working prototype, which you can extend to create a solution that will meet your needs.
For more information and the downloadable file for Taxonomy/Tagging Starter Kit for SharePoint Server, go to http://www.gotdotnet.com/codegallery/codegallery.aspx?id=519fbd31-dd7a-4fd7-913c-8a8998f097b0
Very Interesting and helpful as i get ready to deploy sharepoint. This should help with planning and designing the needs for my 12 department company.
If you prefere a commercial solution for categorizing, tagging, taxonomy and knowledge management, 100% SharePoint-based then check out:
http://www.sharepartxxl.com/products/taxonomy/default.aspx
With that extension the SharePoint portal really can become a place to share knowledge as well as content.