Not sure who is behind Totally Sweet Photos but he (maybe Tom) or she describes a A Hyper-Organized, Smart Collection-based Lightroom Workflow:

This seems like an incredibly complicated workflow, however since the majority of the tools involved are self-updating smart collections I put forth virtually no effort in order to keep track of thousands of images. In fact, in the past I have managed lesser amounts of photos with fewer steps in what were much more complicated and time-consuming workflows. Thanks to automation, all I really do now is work on my photos and trust Lightroom to keep the books straight.

Good to see my workflow scribblings still hits a sweet spot and provokes people into doing their own thing.