I think that is the current standard, but the other option is vbulletin search which allows you to enter words you don't want users to be allowed to search on. That is what I was gonna suggest you do if you were using the vbulletin search. I'm not sure what your options are for the Fulltext search engine - you may be able to write a plugin using a hook at the beginning of the search page and if word xxx is in the search array, then remove it or send a message saying "you cannot search on word xxx". I've never really looked into that, but you can look at the page and see if you can do that.
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