Efficiency-obsessed tech firms are sticking newsletters on toilet stall walls to keep employees prod

Silicon Valley firms are putting internal employee newsletters on the walls of bathrooms stalls to reach workers while they poop. Google pioneered the practice, and Facebook, Yelp, Jet.com, Group Nine and others have all also adopted the practice in recent years, Business Insider found. The organizer of one company's toilet-wall newsletter boasted of the efficiency gains it gives the company.  The practice is emblematic of the technology industry's relentless drive for productivity and...