Justin James is the Lead Architect for Conigent.
I use WinDirStat for diagnosis and cleanup of user's PCs. The simple fact that I can toss it on a network share and run it from anywhere WITHOUT installing it is the best feature WinDirStat could have. Until others can do this they are useless to me.
I'm not so sure this is a necessary program. I've been using WinDirStat for years to analyze file storage problems. I just don't think there's a need for this.