For thirteen years, Resource Interactive has studied retailers online during their high-stakes holiday season. Why the holiday focus? We’ve noticed that certain competitive advantages become highly conspicuous during these days of intense consumerism—the holiday season can either make or break the year for retailers. In other words, it offers us the opportunity to survey a retailer’s biggest moment and best effort.

Of the 40 online retailers we surveyed using our O.P.E.N. framework, we’ve chosen to feature fifteen in the final report. We focused on the social media, mobile and web site innovation, uncovering quite a few bright spots in a season of innovation and inventiveness. See how retailers fared—from Amazon to Zappos and everywhere in between—and take a look at the most novel marketing moves of the holiday season, which will surely become the everyday fare of 2010. Are you ready?

Download our 2009 O.P.E.N. Watch and share it with your colleagues.