Days ago, Jeff Atwood posted an article
complaining about the lack of visual indications to find where the focus is when interacting with text forms. Now he published another one, expanding the issue to page navigation without the mouse, which is at the moment unrealistic in stock browsers, except in Opera, which is praised by its implementation of spatial navigation.
But that's no the focus of the post, instead the real meat of the article is in the comments, where the readers discuss highly interesting methods they use to surf the Internet in unconventional ways. That includes Firefox addons, Opera tricks, and other hidden features of less known browsers, like Konqueror.