Does anyone have any experience with those keychain digital cameras?

I have a digital slr but that is not practical for me when I just want to take fun shots at a club or going out. My point and shoot broke and I don't really want to buy another one. Does anyone know if those keychain cameras they sell at drug stores work any good? How long do they last?

They are novelty items. Any digital camera that sells for $15-$30 is a joke.