DataHarvest, the European Investigative Journalism Conference, opened Friday, May 7, in Brussels with more than 300 participants coming from across Europe, and some from outside, as well. There was special emphasis on sharing methods and techniques — as well as failures — at the conference. The keynote speech came from Marina Walker Guevara, deputy director of GIJN member International Consortium of Investigative Journalists. Guevara stressed how ICIJ chooses people to be part of its projects, including its award-winning series on offshore tax scams.