What are some things[product/Service] could do better?
In your opinion is the product better, about the same or worse than [OTHER_COMPANY] [PRODUCT] ?
How often do you typically use [PRODUCT]?
Where do you primarily use [PRODUCT]?
How often are you using the [PRODUCT] as compared to a month a go?
Do you usually buy this [PRODUCT] on sale?
Do you typically read the back and side panel of the product's package?
How familiar are you with [PRODUCT]?
What other brands of [PRODUCT_CATEGORY] have you heard of?
What were reasons for trying this [PRODUCT]?
How much did you pay for [PRODUCT]?