AddyOsmani.com
Content: Usability:
addyosmani.com/blog/ (xhtml-mp)
addyosmani.com/blog/ (xhtml-mp)
AOL Web developer Addy Osmani's popular blog covering jQuery, CSS, Javascript, User Interface design and other topics of interest to developers and designers. The site is built using responsive design techniques and adapts itself to work well both on the desktop and in modern mobile browsers, including Opera Mini.