I'm basically repeating my reply, above, with a new subject line for TER to read more easily.
Local Boards currently show up as:
Line One: LOCAL BOARD, e.g., New York
Line Two: a one-line welcome: "Welcome to the New York discussion board." Duh.
Line Three: a standard disclaimer and warning.
Sometimes, it might be beneficial to change the current name of the existing board (Line One) as suggested above (San Fran to "San Fran Bay" or "San Fran - San Jose - South Bay" or "Northern CA" (would need a descriptor,for sure!).
For ALL current discussion boards, change the Line Two "Welcome" message to include descriptive information. Let the local board members suggest what it should say to be most helpful for LOCALS and TOURISTS.
E.g., Line Two for New York: "Welcome to the New York Discussion Board. This forum includes Manhattan, the five boros of NYC (Manhattan, Brooklyn, Queens, The Bronx, Staten Island), Westchester County (White Plains, Elmsford), Orange County, ... Long Island, Nassau County and occasionally New Jersey which has its own forum."
For each forum, include enough info in the Welcome message to clarify for the locals and inform and help the non-locals.
For me, the San Fran board would have to say,
"No, you idiot, Denver is NOT part of the San Francisco Bay Area.