[bashosfrog]

You don't have to use contexts only in the GTD sense. I use them to define lists for my Autofocus implementation. That is, simply:
- Open (open list)
- Closed (closed list)
- About (short for Out & About, a shopping/to-do-in-town list)

It works well. So does having most of my projects in two folders: Live and Stack. I've tried granulating my workload down to specific categories, but find myself focusing on one or two and ignoring the rest. This way, I've got two categories: stuff that needs to get done promptly, and stuff that just needs to get done.