Cisco CEO John Chambers says he doesn't need to sign any giving pledge; generous but private, he finds talking about his philanthropy "uncomfortable".

"Philanthropy is a big issue in the tech industry these days. . . . One person who's stayed out of the fray has been Cisco CEO John Chambers. Even so, Cisco is one of the major tech companies in the Valley and it is known for its generosity and donations. (It even flies entire satellite networks and employees at its own expense to disaster sites worldwide). We recently got the chance to ask him what he thinks of things like Bill Gates' Giving Pledge (which he has not signed). 'Do I need to sign a giving pledge to give? No,' he told us cheerfully, saying he preferred to keep his charitable contributions private because talking about it makes him 'uncomfortable.'" -- Julie Bort, Business Insider