Where are you on a continuum of guarding your knowledge? Fascinating NYT article, "When Those Who Know Won't Share" by Phyllis Korkki (Applied Science, 10/19/14) reports that employees hoard what they know for a range of reasons -- a 'continuum of deception'. My Catholic upbring might call it a 'sin of omission.'
Worker justifications ranged from the fairly benign -- confidentiality concerns -- to 'playing dumb' by giving half-truths or not following up as promised.
Research, and common sense, tells us the organization suffers from knowledge-hiding. Creativity is dampened, and a lot of energy goes into protecting one's turf.
Unfortunately, many of us have been betrayed by sharing our knowledge with others, but we should try to keep the flow of information and ideas open.