I've asked a couple of questions, [here](http://askubuntu.com/q/191696/25656) and [here](http://askubuntu.com/q/177695/25656) that haven't been answered after quite a while. I see no way to improve them. I have asked that they be closed. But, on reflection, would it be better to have them deleted? How does closing a question rather than deleting it affect AskUbuntu's stats?