E-commerce sales grew 13% year-over-year to $50.2 billion, marking the fourteenth consecutive quarter of positive year-over-year growth and tenth consecutive quarter of double-digit growth, according to comScore.

Traffic trends at Walmart and other major retailers declined in December even though e-commerce sales set new records in the fourth quarter and throughout 2012.

Online sales returned to pre-recession growth levels in 2012, advancing 15% to a record $186.2 billion, according to a year end recap by online measurement firm comScore.

Online holiday season sales grew 14% to $42.3 billion, a little short of comScore’s pre-season forecast.

Survey results released Monday by comScore revealed that the most recent work-week saw four individual days eclipse $1 billion in spending, led by Green Monday with $1.275 billion.

Online sales are up 13% so far this holiday season and approaching a record $27 billion, according to the latest tally from the digital measurement firm comScore.

Online holiday sales continue to set new sales records, according to digital measurement firm comScore, and Walmart is presumably sharing in that growth given its site typically ranks second only to Amazon in terms of traffic.

Through the first 30 days of the holiday season online sales have surpassed $20 billion with several days last week above the $1 billion mark.

Digital audience measurement firm comScore has launched a new service called Media Metrix Multi-Platform to help advertisers makes sense of how shoppers are interacting with their brands in an increasingly multi-channel world.

Online shopping surged 26% on Black Friday to surpass $1 billion for the first time, according to the digital measurement firm comScore.

Online retail spending in the United States reached $41.9 billion in the third quarter, up 15% versus year ago, according to comScore.

Eighty percent of smarthphone users access retail content on their devices and Walmart is the third most popular destination, according to research from comScore Mobile Metrix 2.0.