--- a/README	Tue Apr 04 11:41:23 2017 +0200
+++ b/README	Tue Feb 21 11:04:19 2017 +0100
@@ -35,3 +35,16 @@
 
 
 CubicWeb includes the Entypo pictograms by Daniel Bruce — http://www.entypo.com
+
+Contributing
+------------
+
+Patches should be submitted by email at the cubicweb-devel@lists.cubicweb.org
+mailing list in order to get reviewed by project integrators or any community
+member.
+The simplest way of send patches is to use the ``hg email`` command available
+through the *patchbomb* extension of Mercurial. Preferably, patches should be
+*in the message body* of emails. When submitting a revised version of a patch
+series, a prefix indicating the iteration number ``<n>`` of the series should
+be added to email subject prefixes; this can be achieved by specifying a
+``--flag v<n>`` option to ``hg email`` command.