Use cases

What are typical use cases? Well there are many of them, but recently I figured out one very nice use case. You all those girls who are really happy to go shopping, they really love to take their best friends with them to discuss what is this piece of cloth like. Does this look ok on me ? Or do I look fat ? Supportive friend then replies that she looks great, and bussines is made once again. But what if our girl cannot settle some time to go shopping with her friends ? Helpdesk application can be used in this example too. Defining your friends as your mentors makes them able to respond on your request to comment the cloth you are currently testing.