"All of our new research findings support a single conclusion: designing for mobile is hard. Technical accessibility is very far from providing an acceptable user experience. It's not enough that your site will display on a phone. Even touch phones that offer "full-featured" browsers don't offer PC-level usability in terms of users' ability to actually get things done on a website."

"Big, two-dimensional drop-down panels group navigation options to eliminate scrolling and use typography, icons, and tooltips to explain the user's choices."