Bad Visual Controls Example: Software via Lean Manufacturing Blog. Funny example. If I had to use it I might use a different adjective.
In the example, the software uses icons that are not obvious. The user has pasted labels on their monitor with text description of each icon. The labels are smaller than the icons.
Some resources for web usability and software usability “A user interface is well-designed when the program behaves exactly how the user thought it would.” (that is pretty hard [impossible actually] to accomplish when the user doesn’t have a clue what will happen).