Very useful presentation how to proof ROI of Social Media (and perhaps even Marketing in general). Just working on @zoernert on some similar anaysis for the Lotus-brand, but more focussed on awareness. But perhaps having two layers, the revenue layer and the awareness and Social Media layer makes sense – with a certain time gap associated. What do I mean with time gap? Marketing activities in general do not create immediate revenue, at least not in B2B business. The impact on business comes later.