During its earnings call on Tuesday, Barnes & Noble’s chief executive officer William Lynch discussed several figures related to book sales — the most interesting of which is that eBooks are flying off the digital shelves. “We now sell three times as many digital books as all formats of physical books combined on BN.com,” Lynch said during the call, noting that the Barnes & Noble NOOK’s market share has increased slightly to 27%, up from 25% last quarter. Similarly, the firm’s NOOK business saw nearly 300% growth over the same quarter last year. Brick and mortar store sales were down 3% for the quarter. We can’t say we’re that surprised by the figures, after all, the new NOOK convinced us to switch to eBooks.