This chart about spending in restaurants is unbelievable ... because it has a major problem

This is an amazing chart. The chart shows that total spending at restaurants and bars -- "food and drinking places" -- topped spending at grocery stores in March.  This is a huge deal.  But it doesn't quite show what you think.  That's because major grocery retailers like Wal-Mart, Costco, and Target aren't considered grocery stores, as Jonathan Maze at the Nation's Restaurant News notes.  Maze also points out that more than half of Wal-Mart's $485 billion in annual sales come from grocery,...