Amazon Will Benefit From Silk More Than Its Customers Will [Silicon Alley Insider]
Silk is being marketed as a cloud-based browser because it pulls web pages that are already pre-loaded on Amazon's servers. This makes the browser faster for the end user avoiding loading web page components from the open Internet.
Not only does this have potential speed benefits for Fire users, but it also has enormous benefits for Amazon and its e-commerce business. With all Kindle Fire users' traffic flowing through its own servers, Amazon can aggregate data about what Fire users are buying online, as well as the sites from which they're buying.
It's unclear whether Amazon will provide users with options other than the Silk browser. Kindle Fire users will be able to load third-party applications from the Amazon marketplace, but Amazon must approve those apps.