Check out the stats for the WCF load test tool on codeplex. The tool is approaching 2000 downloads! Kudos again to Rob Jarratt, who wrote this tool. It's great that we have a platform with the right extensibility hooks that enables us to produce out band solutions to key problems like this one.
I had the chance to actually meet Rob face to face and go to dinner with him last night. Rob is from the UK, so we'd never actually met! What a connected world we live in. We were both spending the day at TechReady, our Microsoft-internal technical field sales conference in Seattle (support, consultants, and technical sales come from around the world to exchange info and learn more about our products).