IBM reports that evening shoppers helped push Cyber Monday’s online sales up 33 percent over 2010 and 29.3 percent over Black Friday.

Cyber Monday is the first Monday after Thanksgiving, which marks the first big jump in online spending for the holidays. Consumers are on the hunt for major discounts, special deals, and free shipping.

According to IBM’s Coremetrics report – which includes real-time sales data from the websites of more than 500 leading U.S. retailers – the average order amount was up 2.6 percent from $193.24 in 2010 to $198.26 in 2011.

Shoppers referred from social networks generated 0.56 percent of all online sales on Cyber Monday, barely beating Black Friday’s 0.53 percent. Facebook accounted for 86 percent of all social media traffic, which could mean that more consumers are paying more attention to ads or updates from your Facebook Page.

Leading up to Cyber Monday, discussions across social media sites increased by 115 percent compared to 2010. Consumers shared tips about price comparisons, deals for international shoppers, and Black Friday in-store experiences.

On Cyber Monday, 10.8 percent of consumers used a mobile device to visit a retailer’s website – which is up from 3.9 percent in 2010. Mobile sales also saw an increase, reaching 6.6 percent versus 2.3 percent last year.

It’s interesting to note that more shoppers relied on mobile devices to shop on Black Friday. Cyber Monday mobile traffic averaged 10.8 percent while Black Friday pulled in 14.3 percent. Mobile sales reached 9.8 percent on Black Friday, just narrowly beating Cyber Monday’s 6.6 percent. It’s possible that more people were shopping while on the go on Friday.

Apple’s iPhone and iPad continue to rank highest for mobile traffic, pulling in 4.1 percent and 3.3 percent respectively. iPad-carrying shoppers drove more retail purchases than any other device with conversion rates reaching 5.2 percent. The iPhone was close behind with 4.1 percent and Android came in third with 3.2 percent.

The total dollar amount spent yesterday is not yet available, but with Black Friday’s record-breaking sales, it’s fair to assume that it will surpass last year’s $1 billion total. For those that didn’t take advantage of Cyber Monday deals this year, you might want to reconsider in 2012.

[Via: TechCrunch, Image credit: Stephen]