diff --git a/assets/top-posting.txt b/assets/top-posting.txt
new file mode 100644
index 0000000..0948a13
--- /dev/null
+++ b/assets/top-posting.txt
@@ -0,0 +1,6 @@
+A: Because it messes up the order in
+   which people normally read text.
+Q: Why is top-posting so bad?
+A: Top-posting.
+Q: What is the most annoying thing
+   in email?
diff --git a/sections/top-posting.tex b/sections/top-posting.tex
new file mode 100644
index 0000000..7dbc8f9
--- /dev/null
+++ b/sections/top-posting.tex
@@ -0,0 +1,16 @@
+\section{Rule number 3: top posting}
+\begin{frame}{A weird practice}
+    Humans tend to read top to bottom, try to read this conversation.
+
+    \lstinputlisting{assets/top-posting.txt}
+\end{frame}
+\begin{frame}{Corporate communication}
+    The Linux kernel maintainers have an interesting point on this topic~\cite{netiquette:lkml}.\vspace{1em}
+
+    \begin{quote}
+        If you reply to an e-mail on a mailing list do not top-post. Top-posting is the preferred style in \textbf{corporate communications}.
+    \end{quote}
+\end{frame}
+\begin{frame}{How to (all)}
+    Text is appended to your reply to allow YOU to read it in a chronological fashion, however, you should delete delete the lines that you don't need as you shape your reply.
+\end{frame}
diff --git a/slides.tex b/slides.tex
index df42094..a96475b 100644
--- a/slides.tex
+++ b/slides.tex
@@ -23,6 +23,7 @@
     \input{sections/presentation}
     \input{sections/signature}
     \input{sections/plain-text}
+    \input{sections/top-posting}
 
     \nocite{*}
     \bibliography{refs}