A List Apart Magazine is an online magazine about modern web design, explores the design, development, and meaning of web content, with a special focus on web standards and best practices... 

http://www.alistapart.com/

Smashing Magazine is focused on design and web-development. We deliver useful information, latest trends and techniques, useful ideas, innovative approaches and tools... 

http://www.smashingmagazine.com/

PPC Blog offers free tips, advice, and tools for advertisers who are looking to get the most out of their Google AdWords campaigns... 

http://ppcblog.com/