Tilo Bonow is the founder of Berlin-based agency Piabo, which specialises in supporting challenger technology and digital brands, from investors to tech heavyweights. Bonow also mentors entrepreneurs in start-ups accelerators and incubators, and acts as a business angel and investor via a number of venture capital funds. An early adopter of audio social media app Clubhouse, Bonow gives Maja Pawinska Sims his top tips for PR professionals on making the most of it of the new platform.