Stephen Downes

This is a service that lets you search for a resource you're citing, and then generates a citation in on e of the major formats, MLA, APA, or Chicago. Cites books, websites, newspaper articles, and more. As well, if the item isn't in their database, you can add it (this really enhances the services, in my view). A good business idea that will last until Microsoft copies it and embeds it in Word.