https://www.theguardian.com/technology/2020/mar/31/zoom-booms-as-demand-for-video-conferencing-tech-grows-in-coronavirus-outbreak > Estimated net worth of founder has increased by more than $4bn since coronavirus crisis started > From nursery school sing-alongs to FTSE 100 boardrooms and even UK cabinet meetings hosted by the poorly prime minister, a socially distanced world is reconvening in cyberspace with the help of Silicon Valley video conferencing app Zoom.