• by Sarah Mahoney  @mahoney_sarah, December 7, 2010

Despite a gangbusters Cyber Monday, looks like consumer enthusiasm for online holiday shopping is fading a little, according to the latest tracking results from comScore. The Reston, Va.-based digital measurement company attributes the hangover to the heavy discounting and promotional activity leading up to Cyber Monday, which got people shopping earlier than usual.

That slowdown was to be expected, Andrew Lipsman, comScore's senior director of industry analysis, tells Marketing Daily. "Our forecasted holiday growth of 11% accounts for an expected slowdown," he says. "The heavy promotional activity early in the season pulled demand forward a bit, so we did not think that 13% growth rates could be sustained throughout the season."

So far, comScore reports that e-commerce spending for the first 33 days of the November – December 2010 holiday season has hit $16.8 billion, a 12% increase from that same period last year. And this Cyber Monday came in at a record $1.028 billion.