Amazon today announced financial results for its first quarter that ended March 31. The company reports that net sales increased 22 percent to $16.07 billion in the first quarter, compared with $13.18 billion in first quarter 2012. Despite the increased sales, Net income decreased 37 percent to $82 million in the first quarter, or $0.18 per share, compared with $130 million, or $0.28 per share in the first quarter of 2012.