How is it possible for people to not understand that a nodelet's contents are cached when it ends with "As of 2009-10-02 20:45 GMT"? Probably because they don't even bother to read to the end of the nodelet. Will they then read a sitefaqlet? Seems unlikely. I don't see this as a problem that needs to be "solved", though. Trying to prevent all "stupid" (or "unnecessary") questions just leads to one's own unhappiness. :)

If site documentation is unclear or incomplete, updates are, of course, appreciated.