+CSS and images in the /theme/ directory are available under the
+Creative Commons Attribution 3.0 Unported license, with attribution to
+"StatusNet". See http://creativecommons.org/licenses/by/3.0/ for details.
+
+Our understanding and intention is that if you add your own theme that
+uses only CSS and images, those files are not subject to the copyleft
+requirements of the Affero General Public License 3.0. See
+http://wordpress.org/news/2009/07/themes-are-gpl-too/ . This is not
+legal advice; consult your lawyer.
+