Breadcrumbs are useful in applications which use a nested conversation model. The breadcrumbs are a list of links to conversations in the current conversation stack:
<t:dataList value="#{conversationStack}" var="entry">
<h:outputText value=" | "/>
<h:commandLink value="#{entry.description}" action="#{entry.select}"/>
</t:dataList>
Please refer to the Seam Issue Tracker demo to see all this functionality in action!