Or how about a household with multiple i-devices? Instead of having to plug each and every one of them, you can lay them all on a power mat, placed in a common area like the living room, freeing up sockets and eliminating the need for redundant cables!
This. You should see my dang kitchen counter with 4 iPhones and a couple of iPods in the family. It's a white spaghetti mess when everyone wants to charge.