[TimberFloorAu]

There are many hotspot maps online.

Also some cracking accordion scripts that would work great with your concept.

I am currently creating a ajaxified search auto completer for another site. This could work very well within other forum elements too.

Example;
In js for ajax auto-complete, you could have state | City | postcode.

Then when a user types in a search, this could jump them to specific forum.

May be a tad ambitious for USA as its so bloody big, but major cities, of which USA has 52 Capital cities etc could work seemlessly.

Accordion Menu could work the same, and reveal 10 easy to read cities by state, and then onclick, would expand to display forum information as "it does now" but just for that forum.

We use a cracking little script on one of our other sites which uses a simple accordian.
at www.air-conditioning.com.au

Give it a once over. It may work for you.

Ste

--------------- Added [DATE]1231016116[/DATE] at [TIME]1231016116[/TIME] ---------------

added:

http://www.air-conditioning.com.au/install.php

Scroll to bottom. Its a fully distributeable script, and free. Let me know.

Ste