One of my speech for Web Analytics Wednesday Hong Kong 28 Mar, 2012
This is a generic approach to tackle "what message to deliver to whom on which channel" problem by detail content preparation and strategy. In addition to just the content performance evaluation based on on-media KPI (e.g. Likes or Comments), the speech includes some basic tactics in bridging platform to conversion checkpoints along with a simplified version of multichannel analysis (You may find more details for an advanced approach on this on my blog idea-stack.blogspot.com).
A detail working example has been demonstrated using Pinterest as documented on my blog as well, which you could find the corresponding links as follow:
Enjoy and feel free to leave me a comment. :)
Extended Reading: Pinterest Analytics - from Strategic Planning to Tactical Measurement