SAN FRANCISCO & DUBLIN--(BUSINESS WIRE)--Apple’s Safari browser accounted for over half of US mobile and tablet internet usage in March according to independent website analytics provider, StatCounter. “This emphasises the potential prize in the rapidly growing mobile space for Yahoo, Bing or others if Apple decides to end its default search deal with Google,” commented Aodhan Cullen, CEO, StatCounter. In a quarterly earnings call in January, CEO Marissa Mayer said that Yahoo was definitely in