What is the format of an FAQ?

The Dilbert comic strip has a recurring theme that reinforces the perception that often FAQs are not truly "frequently" asked questions via parody. Dogbert intentionally writes FAQs to be as obscure and useless as possible. Many corporate websites can be seen as the source for this gag, since some of their FAQs are nearly as obscure and far from a regular user's mind as the Dogbert versions are. Usability experts Jakob Nielsen and Steve Krug (in Don't Make Me Think) have mentioned this in their writings, that too often these FAQs are written from an internal vantage point in place of putting true thought into the user's perspective and what information typical users may want and need.