Hide specific tags from search results

Hi, is there a way we can hide specific tagged entries showing up in search results? I tried this:

           {{#query}}
            {{^entries}}
            <p>Sorry, nothing found for “{{query}}”</p>
            {{/entries}}
          {{/query}}

          {{#entries}}
          {{^tagged.jotfeed}}
            <a href="{{url}}">{{title}}</a>
            <span class="small">{{date}}</span>
            <br />
          {{/tagged.jotfeed}}
          {{/entries}}

..and it doesn't seem to work?

Thanks! Ray