One of my favorite aspects of the infrastructure of the web is that the way we refer to web browsers in a technical context: User Agents. Divorced from its geeky context, the simple phrase seems to be laden with social, even political, implications.
The idea captured in the phrase "user agent" is a powerful one, that this software we run on our computers or our phones acts with agency on behalf of us as users, doing our bidding and following our wishes. But as the web evolves, we're in fundamental tension with that history and legacy, because the powerful companies that today exert overwhelming control over the web are going to try to make web browsers less an agent of users and more a user-driven agent of those corporations. This is especially true for Google Chrome, Microsoft Internet Explorer and Apple Safari, though Mozilla's Firefox may be headed down this path as well.