Nope, can't use a form in the README file.

README.md

@@ -171,24 +171,7 @@ License
 Mailing List
 ============
 
-<table border=0 style="background-color: #fff; padding: 5px;" cellspacing=0>
-  <tr><td>
-  <img src="http://groups.google.com/intl/en/images/logos/groups_logo_sm.gif"
-         height=30 width=140 alt="Google Groups">
-  </td></tr>
-  <tr><td style="padding-left: 5px">
-  <b>Subscribe to Ansible Project</b>
-  </td></tr>
-  <form action="http://groups.google.com/group/ansible-project/boxsubscribe">
-  <tr><td style="padding-left: 5px;">
-  Email: <input type=text name=email>
-  <input type=submit name="sub" value="Subscribe">
-  </td></tr>
-</form>
-<tr><td align=right>
-  <a href="http://groups.google.com/group/ansible-project">Visit this group</a>
-</td></tr>
-</table>
+    * (ansible-project)[http://groups.google.com/group/ansible-project]
 
 Author
 ======