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http://cacm.acm.org/magazines/2009/5/24646-api-design-matters/fulltext#F1
http://www.joelonsoftware.com/articles/fog0000000043.html
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http://gwaredd.blogspot.com/2010/02/game-development-in-post-agile-world.html
http://betandlay.co.uk/strategies/Ideas/Place_market.htm
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