Not only does the backchannel save a company many man hours of senior engineer time (which has the bonus effect of not upsetting said senior engineers), compani

Not only does the backchannel save a company many man hours of senior engineer time (which has the bonus effect of not upsetting said senior engineers), companies often give substantial cash rewards to employees who's referrals get hired and stay for some period of time. I'm talking tens of thousands of dollars, it's pretty insane.