Here’s how you quantify the power of a viral video. More than 7.7 million views = a 150 percent jump in sales inquiries for the hearing aide company Envoy Medical. Sixteen days ago 29-year-old Sarah Churman posted a video of herself hearing her voice loud and clear for the first time after being implanted with Envoy Medical’s Esteem device. The video went viral, sales have spiked and Churman and Envoy have shared the spotlight on The Today Show, Ellen DeGeneres,
