--- hardlink-0.2.0.ebuild
+++ hardlink-0.2.0.ebuild
@@ -18,10 +18,15 @@
 DEPEND="${RDEPEND}
 	virtual/pkgconfig"
 
-DOCS="README"
+DOCS="README ${T}/README.rsync"
 
 src_prepare() {
 	sed -i -e '/^CF/s:?=:+=:' -e '/^CF/s:-O2 -g::' Makefile || die
+
+	cat <<-EOF > "${T}"/README.rsync
+	You need to explicitely include rsync exclusion by an argument. For example:
+	# hardlink -c -t 2011*
+	EOF
 }
 
 src_compile() {