I find the "model" / way of breaking it down more interesting than the actual numers
Adoption Paths of Web -Applications
From recent scientific conceptual ;-) work I know how important and how difficult the topic of adoption is.
O.k. the McK world is made from "bussiness", "it department" and "headquarters". The (global) Siemens story belongs to the 3rd category, which shows that even headquarters can be a-head sometimes. But they better had read some scientific papers... [more]