Identifying common needs and practices in Digital Public History Communities. Digital History in its interactive version 2.0, has certainly helped to open up "high culture". But with the advent of web 2.0, history and memory are now the prerogative of anyone using "crowdsourcing" activities. The danger today is that specialists will not control anymore how digital history will show us the past. Without acknowledging that new instruments are transforming the historian’s craft, and without reflecting on the terms of these transformations, the digital revolution will eliminate the historians professional capacity to reconstruct the past. History will soon become an open territory for everybody to play with. This blog would like to reflect and inform about the most significant mutations that a Digital Public history way to Public History is offering: new forms of history practices used by professional historians in our globalized societies should be better looked at.