The latest Echo Chamber episode explores how agencies can improve their new business presentations, the role PR has played in the rise and fall of unicorns and AMEC's Measurement Month. Aarti Shah talks to Steve Astle who — until recently — was head of communications at FICO about what wowed him during agency business presentations, then Blueshirt CEO Alex Wellins talks about the US tech IPO landscape and the show closes with AMEC's Jeni Chapman discussing the organization's new measurement framework.