Opera has been trying to rethink the browser a bit. By including a web server in it (plus some sort of dynamic DNS and probably some other stuff as well to make it a good user experience).
The name of the new browser is Unite, and contains a platform for web based applications. Some sort of easy to use one-stop-application, you can share files, photos, notes (sort of a guestbook) or access your media library at other places. As long as the computer running Opera is on that is.