Magazines and E-zines

Electronic Commerce Guide
Free articles and resources of interest to electronic commerce developers, web marketers, and business managers.
http://www.davidreilly.com/topics/electronic_commerce/

Fast Company
Magazine dedicated to reporting about how the "fast companies" (entrepreneurs, and cutting-edge) are doing what they do. Contains best practices, lessons learned, and cases.
http://www.fastcompany.com/

Fortune Small Business
Fortune magazine's small business website. Updated daily with stories on e-commerce, finance, and marketing.
http://www.fortunesb.com/

Line56.com
Features business-to-business e-commerce news, analysis and profiles of major players.
http://www.line56.com/