Fun matrix. Please notice that the cost factor results in an arrow from right to left. Self publishing is cheap and CMSes are getting more and more costly (because of the operating costs / editorial cie's, flagship "collaterals" etc). It also reminds me of The Knowledge Management Spectrum by D. Binney. Derek Binney / Computer Sciences Corporation (CSC), Falls Church, Virginia, USA (2003). He also presents a matrix knowledge type versus tool / application. From left to right I rather like the 'IM - KS - PKM' partition :-) As you wish I think KS is Big KM and IM the little brother. Big KM ... mmmm a variation in Big data? Keep up making us read you, Jaap