This information is distracting, not useful. Again, a solution that balances aesthetics and usability is available. Once you are sensitive to the built-in navigation features of web browsers, it is easy to avoid disabling or duplicating those features. In fact, it is both possible and desirable to find ways to leverage them. In designing navigation systems, you should consider all elements of that system.
Web browsers are an extremely common and integral part of the user's navigation experience.
From a philosophical perspective, we might say that web pages do not exist in the absence of a web browser. Building Context With all navigation systems, before we can plot our course, we must locate our position. Without that landmark, we must struggle to triangulate our current position using less dependable features such as street signs or nearby stores. In designing complex web sites, it is particularly important to provide context within the greater whole. Many contextual clues in the physical world do not exist on the Web.