• 

  Lifehacker

  Tips and downloads for getting things done
  http://www.lifehacker.com

• 

  Lifehack

  Tips for Life
  http://www.lifehack.org

• 

  A life of productivity

  http://www.alifeofproductivity.com

• 

  Productivity501

  Pieces of the productivity puzzle.
  http://www.productivity501.com