Adobe is doing some pretty despicable stuff – logging EVERY book (whether or not you are using Adobe Digital Editions) and sending it back to a server. (Here’s the guy who first discovered it).
Why is this an issue? Because the books you read can be used to discriminate against you or, in some countries, land you in jail. In the USA it could put you on the no-fly list. As soon as I get home I’m uninstalling ADE – I’d installed it for the possibility of checking out digital books from the library. Forget it! I’m sticking to the no-DRM books and physical books at the library.