* limit the interest of comment spam with rel="nofollow" for anonymous wiki contributions (see [Google](http://googleblog.blogspot.com/2005/01/preventing-comment-spam.html))
* identify page tags with rel="tag" (see [microformats](http://microformats.org/wiki/rel-tag))
* define a social network with rel="friend co-worker met ..." for contacts (see [XFN](http://www.gmpg.org/xfn/))
* limit the interest of comment spam with rel="nofollow" for anonymous wiki contributions (see [Google](http://googleblog.blogspot.com/2005/01/preventing-comment-spam.html))
* identify page tags with rel="tag" (see [microformats](http://microformats.org/wiki/rel-tag))
* define a social network with rel="friend co-worker met ..." for contacts (see [XFN](http://www.gmpg.org/xfn/))
-> Both applied, thanks. Leaving the bug open since rel=nofollow etc are
-> still requested here. --[[Joey]]
+> Both applied, thanks. Leaving the bug open since other parts are not
+> implemented yet. See also [[rel=nofollow_on_external_links]] --[[Joey]]