[TommyW]

As well as the usuals...
@Calls
@Agenda (and people within)
@Waiting_For
...

I have contexts for places like
@Home
@Studio
...

I have contexts for brain states, like...
@Brainstorm
@Clearing
...

I have contexts for computer, like
@Mac_Create
@Mac_Email
@Mac_Research
@Mac_Blog
@Mac_Shop
@Mac_Plan
...

None of the above are complete, but that's my usual approach. I think the main thing is the kind of activity that is important to me as well as the limits on that imposed by my circumstance...place, energy, tools available etc.

I have access to the net pretty well everywhere I go, I can't see any point in @Mac_Online for me, I use Research, Shop, and Blog, what kind of thing am I doing, each of which presumes I'm online.

My Mac_Create can get a bit large at times, I could subcontext it using apps, but I'd be more inclined to do it by activity, like

@Mac_Create>Proposal
@Mac_Create>Site_Design
@Mac_Create>Budget
...