They will work with responsive layout techniques and adaptive augmentations.

FORBES: The Future Of The Web: The Case For Responsive Design

These sites deliver advanced features beyond simply a responsive layout.

FORBES: The Future Of The Web: The Case For Responsive Design

We now have a little more REX with responsive design and the fact that the layout is not the problem, the context is: when using a mobile device like smartphones, users are in a mobile context (commuting or waiting in a line).

FORBES: Forget Mobile First, Think Tablet First