Usability 
Chris Messina is an opensource advocate known for his work with Firefox, Flock and the Bar Camp movement. Chriss now works at Google as an open web evangelist. One of my favorite Chris Messina posts is, "Steve Jobs hates the App Store". The title is a bit misleading, the provocative and lively post is really about Chris' belief that the future of computing, including mobile computing, is not with apps but with web services. Highly recommended.
You can read Steve Jobs hates the App Store and the rest of Chris' thoughts on the web, social networking, open source, mobile browsers and a whole more at his blog, FactoryCity. The site's mobile edition is generated with Alex King's Carington Mobile Wordpress plugin.
No updates since 2010.