The poster is composed by Liliana Bounegru and Lulu Pinney shortly says what is in the Data Journalism Handbook. This referrence book shows how journalists can produce interesting news out of data gathered from the web.
The chart explicitly shows the data processes diagram starting from getting raw data till delivering it to the audience in any fitly form (in stories, visualizations or apps). These processes are the content of the book in stories by the leading news publishers.
http://www.flickr.com/photos/jwyg/7021428461/sizes/o/in/photostream/
The poster desing closely followes the Data Journalism Handbook original design.
The free, open source reference book was released in July 2012 as an initiative of the European Journalism Centre and the Open Knowledge Foundation. The printed version is available at O’Reilly Media publishing.