Our latest study has just been released (with @arimue). From an analysis of five Enterprise Social Networking cases we have identified a comprehensive catalogue of ESN use cases and integrated them into a framework. We hope that this S.O.C.I.A.L. framework will not only provide a good overview of emergent ESN benefits, but also illustrate the variety of potential ESN uses in a catchy way!
For the full report, which includes a table with detailed use case descriptions, as well as case scenarios and data from the cases please download the full report as pdf here (pdf at bottom of the page):