I've installed a mod to allow you to totally ignore one or more boards (by ignore, it means you have no visibility to the board(s) selected, and the new topics/postings in the ignored board(s) will not appear in the 'unread' search).
To activate, just go to your Profile and click on "Ignore Boards Preferences" under the Modify Preferences in the left-hand menu bar. Put a check mark in front of the board(s) you wish to ignore, and press the "Change Profile" button at the bottom of the page and you're done. If you decide you don't want to ignore a board afterall, just visit the Ignore Boards Preferences page again, and remove the check mark(s) and press Change Profile .. the ignored board(s) will be viewable again.
Best regards,
Ken