Chart - US Desktop Retail eCommerce Spending

Desktop-based retail e-commerce spending grew by 13% year-over-year in Q3 to reach $47.5 billion, estimates comScore in its latest quarterly e-commerce figures. That’s one of the slower growth rates of the recent past, but still represents the 16th consecutive quarter of growth and the 12th consecutive quarter of double-digit increases. While desktop-based spending continues to increase on a year-over-year basis, mobile spending is thriving.

During this past quarter, retailers rang up $5.8 billion in mobile commerce. That’s almost 25% higher than Q2′s figure of $4.7 billion (comScore only began releasing mobile commerce figures in Q2, preventing year-over-year comparisons for now). Read the rest at MarketingCharts.