The mobile web has evolved to enable increasingly sophisticated applications, which we often wish to debug during development on the desktop.

Google Chrome now supports the ability to emulate mobile devices. A great addition to Chromes already excellent dev tools.

First, I should always have a Mobile Only persona in my mind when creating a site. That use case may be small now (in America), but it won’t be for long. In India, for example mobile usage has already overtaken desktop use.

Excellent point. I use my phone/tablet to surf the web, not the computer.