Yahoo’s board is weighing the sale of the Internet business at a three-day board meeting starting on Wednesday, a source familiar with the matter told Reuters. Chief Executive Marissa Mayer’s attempts to revive the traditional business have born little fruit, and almost all of Yahoo’s market capitalization of about $34 billion is ascribed to its stakes in Chinese e-commerce company Alibaba Holding Group Ltd (BABA.N) and Yahoo Japan Corp .