Derek Miers has published an excellent whitepaper on the BPMFocus site, about SharePoint as a Business Process Management platform. If you’re looking to increase your ability to leverage your SharePoint portal as a productivity-enhancing tool, or to help you streamline business automation, you should read this article!
I was honored to be approached by Derek last year to discuss this topic and contribute some comments, which Derek included in this excellent resource. (Thank you, Derek!). See my comments in SharePoint as a Strategic Weapon, by Derek Miers, published in October 2009.