Yes, but Calls and Agendas are still based on a location.
There really is no relation in any sense of GTD to have a context titled @Job Search. That would be a project, not a context, imo.
For instance: You may find yourself with an extra few minutes and decide to go into your "context" @Job Search to work on a next action. You find your next action is "Lookup Monster.com for updated listings". But yet you are not near your computer. So your next action can not be completed because your context is not based on any type of location to actually get it done.
Even based on this definition...
"Context is also the first criterion that limits your options and keeps you from being reminded of things you simply can’t do"
...there is nothing in the context "@Job Search" to limit your options or give you any indication at all if you can do anything in that context at any given time.
There really is no relation in any sense of GTD to have a context titled @Job Search. That would be a project, not a context, imo.
For instance: You may find yourself with an extra few minutes and decide to go into your "context" @Job Search to work on a next action. You find your next action is "Lookup Monster.com for updated listings". But yet you are not near your computer. So your next action can not be completed because your context is not based on any type of location to actually get it done.
Even based on this definition...
"Context is also the first criterion that limits your options and keeps you from being reminded of things you simply can’t do"
...there is nothing in the context "@Job Search" to limit your options or give you any indication at all if you can do anything in that context at any given time.