Holiday ecommerce sales in 2011 saw a 15% increase over 2010, showing strong consumer spending online. Merchants have adapted by embracing mobile commerce, with more having mobile-optimized sites and apps. Social media usage is also growing, with Pinterest seeing a rise in merchant activity. Merchants are also leveraging marketplaces more for prospecting and promotions, though some worry about losing control of customers. Overall, merchants are adapting well to changing consumer behaviors across channels.