Have you ever felt the need to compare two or more similar products and find out what is different (or similar) between them? It is certainly good that decent websites provide comparison charts, but are they really helpful? Check out this comparison of various Panasonic DVD players.

In order to find out what is different between each model you have to scroll through the entire list carefully and look for columns that are not the same.

I think such charts can be made a lot more usable by providing some simple grouping or sorting features such as "Show differences first" and "Show similarities first".