The Electronic Frontier Foundation has released a series of charts comparing privacy policies on various e-reading devices.

They asked an important question and found some unexpected answers: With whom can they share the information collected in non-aggregated form? As you can see by the chart above, Google, Barnes & Noble, Amazon and Sony could all potentially share information with law enforcement officials or civil litigants.

Check it out: “Unfortunately, unpacking the tracking and data-sharing practices of different e-reader platforms is far from simple. It can require reading through stacked license agreements and privacy policies for devices, software platforms, and e-book stores. That in turn can mean reading thousands of words of legalese before you read the first line of a new book. As we’ve done since 2009, again we’ve taken some of the most popular e-book platforms and combed through their privacy policies for answers to common privacy questions that users deserve to know.