Specifically, if I have a foo module that includes a bar module, then bar's tasks will show up under foo's namespace. See
https://gist.github.com/1085763 for an example.
The frustrating thing here is that I cannot have a module that puts tasks together, because it would effectively re-namespace everything it uses. The only way to combine tasks (that I have found thus far) is to combine all of the work in fabfile.py.