Data and Information Visualization challenges/contests calendar

Below is a list of past/upcoming challenges and contests related to data and information visualization. My focus is on online contests, i.e. that anyone can perform at home/work with no mandatory physical presence (e.g. workshops, barcamps, ..). Let me know if anything wrong or missing.

LAST UPDATE : DECEMBER 18, 2012.

2013

2012

2011

2010

 2009

2008

2007

2006

2005

2004

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