Usability 
A List Apart (ALA) is a highly regarded online magazine covering web design and development started by Jeffrey Zeldman in 1998. ALA is notable not only for the quality of its articles but also for the visual design and standards compliance of the site.
ALA last week launched a mobile version which continues the tradition of superior design and usability set by the main site. ALA mobile scores 5 out of 5 on Ready.mobi and the markup validates. It was built using the tools and services of Mobify.me, a Vancouver based startup which offers web designers an easy to use interactive design tool for creating mobile sites. Mobify also hosts sites created with the toolset. Device detection and adaptation is built-in to deliver sites optimized for handsets ranging from the iPhone to low end feature phones.. Mobilfy offers both free and paid options. If you are a web designer or publisher looking for a relatively painless way of creating a professional quality mobile site I suggest taking a look at Mobify.me. Disclaimer: I'm doing consulting work for Mobilfy.