Fully Responsive / Mobile Friendly
With the advances in "Responsive" theme design. It saves you from having to "build an app" or host a second "mobile version" of your site. A Responsive site automatically adjusts to fit any screen size. Try it now... Resize this browser window and see how it shrinks down to what it would look like on your mobile device.
Google recently changed the search engine algorithm's to start favoring sites that were "responsive" to any device traffic. So it's even more imperative to include this is all of our design projects.