[1]
[CITE[wfw namespace elements | 2003-10-10 | The Well-Formed Web]] <http://wellformedweb.org/CommentAPI/>


[2]
[CITE[The Comment API | 2003-01-17 | The Well-Formed Web]] <http://wellformedweb.org/story/9>

[3]
[CITE[The Sells Spout]] ([TIME[2006-12-31 00:02:36 +09:00]] 版) <http://www.sellsbrothers.com/spout/default.aspx?content=archive.htm#exposingRssComments>

[4]
[CITE@en[RSS:Article:Why Well-Formed Web RSS Module is Popular - Syndicating Your Comments - MDC]] ([TIME[2006-05-18 07:09:12 +09:00]] 版) <http://developer.mozilla.org/en/docs/RSS:Article:Why_Well-Formed_Web_RSS_Module_is_Popular_-_Syndicating_Your_Comments>