The uber-loneliness of the sharing economy driver

The alienated workers behind Uber's app are using other networks to communicate, saying they need the companionship

Bill Moore's walkie-talkie app Zello has mostly been used for people struggling against repressive regimes in places like Egypt, Turkey and Bahrain. In South Africa, communities use it as a 911 system. During anti-government protests in Venezuela, activists turned to Zello.

But hasn't been that popular in the US, Moore said, adding that the US isn't even in the top market for the app's 90 million users. Except among one funny group: Uber drivers.