IBM makes a distinction between free web services with no service level agreements, and web services for business transactions. They envision a wide variety of business models for this, including

• The pay-per-click/fee-for-use model
• The subscription model
• The lease model

their resource counter can create a wealth of information and output it in a new xml format for usage records developed by ipdr.org

obviously this needs to be integrated with uddi, and open api's need to be developed so that this can be seamlessly integrated with the overall architecture. i hope it does not mean a worldwide roll out of a pki infrastructure, though. that would suck given the pki adoption track record. Their paper is at developerworks.