A List Apart explores the design, development, and meaning of web content, with a special focus on web standards and best practices.
css-tricks is the work of Chris Coyer, a web design genius. css-tricks has been around since 2007 and publishes a wide range of topics. However, the main topic (if you couldn't tell by the name) is CSS. Some of Chris' other work can be seen at Quotes on Design.
yoast is the work of web developer, SEO and online marketer, Joost de Valk. yoast is all about tweaking websites. This includes helping you with Search Engine Optimization, speed, and user experience. Joost also founded css3.info in 2006 and sold it in 2009 - this guy knows how to build great marketable sites!
finch is a website based around usability and ux design. The site has been around since 2006 and was created by Francisco Inchauste. If you have an unfriendly site then check out finch. The articles are great for people who understand how to develop, but are in need of design and usability knowledge.
TechCrunch is a leading technology media property, dedicated to obsessively profiling startups, reviewing new Internet products, and breaking tech news