A disturbing analysis and report by Tim Libert:
Major advertisers and corporations have been quietly tracking the online movements of those visiting “Occupy Wall Street” related sites for months. They have have used this data to create detailed portraits of the lives and interests of potential protestors. This data is then sold in unregulated markets and retained indefinitely in databases that may be subject to secret government subpoena. The most shocking thing about this is who is ultimately responsible: the self-proclaimed revolutionaries who run the sites.
However, this is not an act of malice: most likely website operators have no idea they are allowing their visitors to be tagged and tracked.
Read more on TimLibert.me
via Chris Soghoian