Bryan and Stephanie Rieger are designers who take an pragmatic, inclusive approach to delivering content across a wide range of devices. Earlier this year they released two seminal (and beautifully designed) presentations on mobile.
"Sowing Seeds" is about mobile in the developing world and why targeting only the iPhone and Android misses huge populations of people who depend on basic devices to close the digital divide.
"Rethinking the Mobile Web" is a guide to creating content that is accessible on everything from feature phones to PCs using a variety of progressive enhancement techniques.
Yiibu's not only a design showcase, the content includes articles offering practical advice on designing for all devices and a comprehensive repository of mobile market share and usage statistics.
Ratings: Content Usability
Ready.mobi Score: 4 "Good"
Mobile Link: yiibu.com