 of example publishers includes:

          <ul>
            <li>
              A social network
            </li>
            <li>
              A personal web site
            </li>
            <li>
              A document publishing system
            </li>
            <li>
              A bridge from a non-conforming social network
            </li>
            <li>
              A document converter from similar document types such as RSS or
              Atom
            </li>
          </ul>
       