I would like to construct a slug starting from the question title.
It would be useful to apps that want to show the original link to the question in a human readable way.
On StackPrinter i have this feature-request:
Suggestion: include the original question URL in prominent fashion near the top of the printout. That would be a good reference from the printed page back to the online version.
I'm aware that StackPrinter: The Stack Exchange Printer Suite works the same.
this will be fixed with the Link Fields feature of the new 2.0 API.