I used to ask people to draw a picture after a usability session. Not a picture of the application itself, but a sketch of how they felt about it.
Not everyone likes to draw, so it didn’t always work. But when participants could do it, we got a great view into what they were thinking.
Here’s one of my favorites, from a study of a human resources application. The person was comparing the new software with other applications he’d used. He liked the new product and compared it to others that weren’t helpful.
“A two-part image: on the left, a desk with a computer, with ‘Clear answers’ above the computer. On the right, a door that said ‘HR’ and ‘Don’t have answers. Come back later.”

Question: Have you ever tried something like this? How did it work?

Good navigation and website design make it easier for users to find what they’re looking for and to buy it once they’ve found it.