I really like your train of thought here Harold and such a schematic helps limit the explosion of information that organizations try to "control" when adopting internal social technology. I was in a meeting of Vancouver's CIOs last week and it was interesting to hear their take. Generally, the discussion talked of no place for personal knowledge tools because they exist outside of organizational command. Hopefully, the few more enlightened CIOs will become the norm - they talked of trusting employees and dealing with single exceptions, rather than protecting against all possible exceptions.