The article gives no indication of why one would implement all this complicated CSS just to duplicate the effect of the "title" attribute. After all, tooltips a

The article gives no indication of why one would implement all this complicated CSS just to duplicate the effect of the "title" attribute. After all, tooltips are already a built-in function of every browser, and users are familiar with how they work. How is this any better than those annoying sites that re-implement scrollbars or the back button in awkward, unfamiliar ways?