Multiple Prisms with Similar Purposes

The Prism system has been much in the news today, apparently a multiple dimension-ed data gathering and predictive analytics system,  recently exposed as a government 'spying' system.  The name sounded familiar to me and I found I had written about a Nielsen system written in 2008, that had some similar characteristics.  Is this the same thing?  Probably not, but focusing such a system on multiple channels of retail data is not unexpected.  And now we have much more available data than in 2008.