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  AdWeek

  Adweek is a magazine and website that covers media news, including print, technology, advertising, branding and television.
  http://www.adweek.com

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  Copyblogger

  Content marketing tools, tips, and training for online marketers, copywriters, and entrepreneurs. The advice, strategies, and solutions that work.
  http://www.copyblogger.com

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  AdvertisingAge

  Ad Age is the leading global source of news, intelligence and conversation for marketing and media communities
  http://www.adage.com

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  Seth Godin

  Seth Godin's riffs on marketing, respect, and the ways ideas spread.
  http://sethgodin.typepad.com