application/rss+xml

application/rss+xml

[3] Media Type (MIME) application / RSS Advisory Board ( 版) <http://www.socialtext.net/rssboard/index.cgi?media_type_mime_application>

application/rss+xml だけど RSS 1.0

[4] 声活観察衛星HitSat(ヒットサット) ( 版) <http://www.imi.ne.jp/abc/info/hitsat.rdf>