Recently Amazon unveiled its Kindle Fire tablet device that runs the Silk web browser. Silk is being touted as a super fast browser because Amazon's cloud servers handle the majority of the lift for web browsing, speeding up page load times and remembering the sites users visit for even faster load times later.
One aspect of Silk that isn't being promoted as heavily is the fact that use of the cloud servers could also enable Amazon to collect more specific user data during web browsing.
It's this feature that has some members of Congress taking a hard look at Amazon Silk. Congressman Ed Markey of Massachusetts has written Amazon requesting more information about Amazon's planned collection policies for user data in Silk and what Amazon plans to do with the data it collects.
Given Amazon's recommendations on its retail portal, it's easy to imagine Silk offering recommended web sites for you based on your search history or targeting web advertisements.