Big box stalwart Staples announced today that they are closing 140 stores in the US & Canada as they focus on online sales and adjust their product mix as sales of traditional items fall. This comes on the heels of venerable Canadian office supply company Grand & Toy closing all of their retail locations earlier this year to focus on online and traditional mail order. The shrinking of Staples can be looked at as part of the general decline of big box retailers when faced with low...