I don't usually emphasize this issue, but it is one that people should be aware of. Amazon, Alexa unit face privacy lawsuits: Alexa is a browser companion that, among other things, gives a "More Pages Like This One" type-feature. In order to display that information, the software must query the Alexa servers on every page view. This gives them access to your browsing patterns for every page you visit while this tool is activated. They may have stepped over the line, if this article is correct.