Bill Gates shows up at Microsoft to celebrate its non-profit efforts October 21, 2012 by admin Tweet Bill Gates made a rare appearance at Microsoft’s headquarters this week to celebrate the company’s Employee Giving Campaign, which has now raised over $ 1 billion over 30 years for non-profit groups. Read more… Neowin Related Posts:Bill Gates uses a foldable phone, but it's not a SurfaceBill Gates' "Internet Tidal Wave" memo 28 years ago…Bill Gates is reportedly still very involved at…Xi Jinping tells Bill Gates he will allow US AI in ChinaMicrosoft co-founder Bill Gates shares five of his…