Here is a great piece of research by Brian Solis over at Altimeter Group.
If you use services such as Klout or PeerIndex to get an idea of how influential your are online, then this makes for interesting reading.
Klout, Kred and co – measuring influence

March 21, 2012
Klout, Kred and co – measuring influence

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Tony set up Collective Content in 2011 so brands can more easily become publishers and tell stories. This built on 15 years in media, from reporter to publishing director at Silicon Media Group, CNET Networks and CBS Interactive.