U.S. online retail sales on Cyber Monday were up 19.4 percent over the same period last year, with the average order up from $180.03 to $194.89 for an increase of 8.3 percent, according to a new report from IBM’s Coremetrics.

Compared to Black Friday, Cyber Monday online sales were up 31.1 percent with the average order up from $190.80 to $194.89 for an increase of 2.1 percent.

The growing trend of consumers using their networks on social sites for information about deals and inventory levels continued on Cyber Monday. While the percentage of visitors arriving from social network sites is fairly small relative to all online visitors—nearly 1 percent—it is gaining momentum, with Facebook dominating the space.

Consumers continue to use mobile as a shopping tool. On Cyber Monday, 3.9 percent of people visited a retailer’s site using a mobile device.

Online shopping peaked on Cyber Monday at 9:00 am PST/noon EST. But consumer shopping had stronger momentum throughout the day than on Cyber Monday 2009.

“Cyber Monday came in as the biggest shopping day of the year so far," said John Squire, chief strategy officer, IBM Coremetrics.

"Consumers this year appear much more willing to open their wallets and are turning to online stores for the convenience of shopping wherever and whenever they like, but also as their primary source of information about products and inventory levels. Retailers have done an exceptional job across the board of appealing to consumers with highly personalized promotions and a slew of free shipping promotions."