How did the 2011 shopping season go? Retail expert Marshal Cohen breaks down the numbers

The 2011 shopping frenzy is over and crowds are thinning at the malls. With most Americans tapped out, retailers are dealing mostly with returns and gift card purchases now.

So how did the holiday shopping season go?

This morning, we asked retail expert Marshal Cohen. He's the chief industry analyst at the NPD Group and the author of the book "Buy Me."