A Gartner report comparing PC market share reveals that Apple saw -2.3% growth from 3Q12 to 3Q13 in the United States. Worldwide PC shipments totaled 80.3 million units in the third quarter of 2013, an 8.6 percent decline from the same period last year, according to Gartner. This is the sixth consecutive quarter of declining worldwide shipments. … [Read more...] about Apple’s Third Quarter PC Market Share Declines Year-Over-Year