Online retail e-commerce spending topped $1 billion for the first time on Black Friday 2012, and now estimates suggest Cyber Monday sales set new records as well this year. Adobe on Tuesday revealed that according to estimates derived from its Adobe Dig­i­tal Index, online shopping on November 26th — Cyber Monday — grew 17% from last year to hit $1.98 billion, approaching $2 billion for the first time.

Mobile grew 100% from 2011 to make up 22% of all Cyber Monday sales according to Adobe’s estimates and Toys and Sporting Goods was the retail category that showed the most growth, followed by Health and Beauty. Interestingly, Adobe states that social networks were responsible for just 2% of referral traffic to retail websites. Facebook and Twitter combined to account for 77% of all referrals from social networks, while Pinterest referrals doubled to 15% of all social referral traffic.

It should be noted that Adobe’s online sales estimates for Black Friday came in at $1.3 billion this year, about 25% higher than comScore’s numbers.