SitePoint
A resource site for Webmasters, focusing on web site design, promotion, submission, positioning, marketing and profitability. Articles by noted Web professionals.
http://www.sitepoint.com
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Small Business Web Update
A monthly paid-subscription print newsletter for small business owners who want information on using the Web to grow their business. Also offers a twice monthly free e-mail edition, featuring selected articles from print publication.
http://www.sb-webupdate.com
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Strategy Week
Online business and marketing strategy articles and advice from corporate executives.
http://www.strategyweek.com/
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The Online Advertising Discussion List
Focuses on professional discussion of online advertising strategies, results, studies, tools, and media coverage.