Future Works
  - Apply this mechanism attaching trust information to general RDF
      description but search result.
      
        - Construct distributed RDF database for translations of
            the Web documents (e.g. recomendations, notes, etc.) and
            attach trust to them.
      
 
- Improve the implementation of this prototype.
      
        - Enhance parsing RDF function by introducing general RDF
            processing library.
        
- Take keyword/topic of the bookmark item into count for
            leading RDF trust.