eMarketer recently published research from L2 Think Tank that highlights the limited mobile website offerings from many leading brands.

"The need for retailers to offer a mobile-optimized site is clear: Not only does fragmentation across mobile platforms mean that one or even two apps won't serve all customers, but research indicates most consumers prefer to use browsers over apps for mobile shopping activities."

This report dovetails nicely with the research 2ergo conducted a few months ago. Check out "Mobilizing Retail: A Look at U.S. Retailers" here.