ElectroMaster, you already do ads through Goggle, they have to have some web front end that you can use to link the boards search function directly through Google, would definitely be worth looking into, people are finicky, a better search ability on the website would likley cut down on the number of posts from people requesting the same information repeatedly. Sure you could go to Google yourself and type in the host, but most people don't know that, and the ones that do (like me) just find it annoying.
Google must have some public notice about fair use of linking directly to their search engine, after all they WANT people to use their search engine.