chg: [slides] add content to the 'use' slide

docs/preso/03-PassTheSalt/pst.tex

@@ -466,11 +466,15 @@ The D4 server provides a {\bf web interface} to manage D4 sensors, sessions and
 \end{frame}
 
 \begin{frame}
-\frametitle{Use Cases}
+\frametitle{Use it}
 \begin{itemize}
-\item 
-\item 
-\item 
+\item {\bf Manage} your own sensors and servers, {\bf find} shameful bugs and
+  {\bf fill} in github issues
+\item Even better, {\bf send} Pull Requests! 
+\item {\bf Share} data to public servers to improve the datasets (and detection,
+  response, etc.)
+\item {\bf Feed} your MISP instances with D4's findings - {\bf Share} yours
+\item {\bf Leech} data, {\bf write} your own analyzers, {\bf do} research
 \end{itemize}
 \end{frame}