[nomad_penguin]

David has articulated exactly what I have been thinking. So far, my work around has been to define an :Other child context.

For example, I have
Mac : Online
Mac : Email
Mac : Printing
Mac : Other

where Mac : Other catches all the tasks I can do on my mac that do not require me to be online or near a printer.

It's not pretty - especially because occasionally actions fall into the Mac context (and not the :Other) and I forget to look for them there.