The described implementations relate to social marketing. One technique identifies potential buyers of a product, the potential buyers belong to a social network. The technique determines a price to offer the product to individual potential buyers that considers both influence of the individual potential buyer within the social network and overall revenue from sales of the product to the potential buyers.

"Ultimately, this issue isn't just about information freedom -- it is about what kind of world we want and what kind of world we will inhabit," she said.

"It's about whether we live on a planet with one Internet, one global community and a common body of knowledge that benefits and unites us all, or a fragmented planet in which access to information and opportunity is dependent on where you live and the whims of censors."

I notice that the idea of 'expert' has changed. An expert used to be 'somebody with access to special information'. Now, since so much information is equally available to everyone, the idea of 'expert' becomes 'somebody with a better way of interpreting'. Judgement has replaced access.