Today, Hammer says he spends most days in California's Silicon Valley. "On a day-to-day basis, I'm loosely involved with about eight [technology] companies that I'm excited about," Hammer says. "Everything from advising to consulting to investing in, it keeps me busy 10 to 12 hours a day."
Watch Hammer discuss a new app that turns social media into a digital magazine.
Between meetings, Hammer uses Twitter to communicate with more than 2 million followers.