Mashable's new design is responsive, and that's something you're going to see a lot more of soon.
2012 has been a very unusual year in the PC market. For the first time since 2001, PC sales are projected to be lower than they were in the previous year.
So which devices are consumers buying? Tablets, for one thing.
Tablet sales are expected to exceed 100 million this year. Their sales numbers may top notebooks next year. Smartphones, of course, are also a hot commodity — according to Nielsen, the majority of U.S. mobile subscribers now own smartphones, not feature phones.
Meanwhile, the shift to mobile is happening at an extraordinary speed. Today, 30% of Mashable's traffic is mobile. By the end of next year, this may exceed 50%.
If you're viewing this article on a desktop browser, for example, try making your browser window smaller. The images and content column will shrink, then the sidebar will disappear altogether. On our homepage, you'll see the layout shrink from three columns, to two columns, to a singular column of content.
In the case of Mashable, we also detect the type of device and change the site's behavior accordingly. On touch devices, for instance, we enable swiping between columns. (Technically, detecting device functionalities may be referred to as "adaptive design," rather than "responsive," but increasingly both approaches are used in tandem.)
The benefits are obvious: You build a website once, and it works seamlessly across thousands of different screens.