Does your Kindle track what books you search for? Does your Nook monitor what you're reading after you purchase an e-book? The Electronic Frontier Foundation has been digging into the license agreements and technical capabilities of e-book readers to find the answers to these and similar questions since 2009. Their newest report is now available:

• Who's Tracking Your Reading Habits? An E-Book Buyer's Guide to Privacy, 2012 Edition

  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. In many cases, these answers were frustratingly vague and long-winded. In nearly all cases, reading e-books means giving up more privacy than browsing through a physical bookstore or library, or reading a paper book in your own home. Here, we've examined the policies of Google Books, Amazon Kindle, Barnes & Noble Nook, Kobo, Sony, Overdrive, Indiebound, Internet Archive, and Adobe Content Server