When is a Frequently Asked Questions (FAQ) page the same as a page containing a map of the site? The answer is they’re always both
No one visits a site out of random curiosity. Everyone has an agenda. And ideally, both the navigation of a site (as manifested in the site map) and the FAQ page address these user agendas.
Every link of a site map promises an answer. Every section of a site is another category of frequently asked questions.
Ideally, an information architect is responsible for designing a site’s map. Conversely, content managers working closest to the customer should be responsible for maintaining the FAQ page, and the answers provided. These two functions should be talking to each other regularly to make both of their contributions the best that they can be.