[1] Xanga Safety (2008-06-08 22:18:27 +09:00 版) http://safety.xanga.com/

	<li>Filed under: <a href="http://safety.xanga.com/category/safetyfeatures/" title="View all posts in Safety Features" rel="category tag">Safety Features</a></li>

[2] IRC logs: freenode / #whatwg / 20120730 ( (2012-08-05 23:46:57 +09:00 版)) http://krijnhoetmer.nl/irc-logs/whatwg/20120730#l-674