 According to "Forbes" editor Kerry Dolan, "media and technology billionaires definitely benefited from a stronger stock market and a growing enthusiasm for all things social" since the 2010 list.However, Nigerian commodity mogul Aliko Dangote was the greatest gainer on a percentage basis as his fortune increased 557 percent to $13.5 billion.Mark Zuckerberg was one of seven Facebook-related billionaires on the list, as he added $9.5 billion to his net worth to move up to 52nd.