According to ComScore, online retail spending in the US reached $49.7 billion in the fourth quarter. This figure has increased by 14% year-over-year, and marks a ninth consecutive quarter of positive year-over-year growth. “The fourth quarter of 2011 capped off what was yet another strong year for online retail, one in which every quarter achieved double-digit increases versus the prior year,” said comScore chairman Gian Fulgoni.