USA Today: Twitter execs were set to present their vision to shareholders at the company’s annual meeting when they were pre-empted by one of their own investors. Just hours before Twitter opened the doors to shareholders, longtime Twitter investor Chris Sacca published an 8,500-word online essay on “What Twitter Can Be.” The essay from one of the company’s most loyal cheerleaders and largest shareholders tore through the worlds of technology and finance, turning up the pressure on already beleaguered management. “I believe Twitter can be so much more than it is today,” he wrote.