While the message fields don't support html, the fields in the My Chow profile do. Here's what you can enter in the local board field to take you directly to the San Francisco Bay Area board.
<a href="http://chowhound.com/boards/show/1/"> San Francisco Bay Area</a>
You can click on my name in the "posted by" line to go to my profile to see what it looks like.
P.S. I saw Jeremy Osner's profile and got the idea from him. (g)