diff --git a/README b/README
index c0e2b28..e54ba67 100644
--- a/README
+++ b/README
@@ -10,11 +10,16 @@ from Yoran Heling.
 
 Dependencies
 ------------
-- C99 compatible compiler
+- C89 compatible compiler
 - POSIX-compliant libc
 - a way to pipe the feed data to rssdl
 
 Usage
 -----
-curl rss_or_atom_url | ./rssdl maildir
+curl rss_url | ./rssdl maildir
 ./rssdl maildir <feed.rss
+
+For atom feeds, pipe the feed through atom_content.sed and then through rssdl.
+
+curl atom_url | sed -f atom_content.sed | ./rssdl maildir
+sed -f atom_content.sed feed.atom | ./rssdl maildir
diff --git a/atom_content.sed b/atom_content.sed
new file mode 100644
index 0000000..a1a0844
--- /dev/null
+++ b/atom_content.sed
@@ -0,0 +1,2 @@
+s,<content.*>,&<![CDATA[,
+s,</content>,]]>&,