While you're at it, read about @microformats's use of the rel attribute. xfn, rel-tag, rel-license, rel-nofollow, etc.
http://microformats.org/wiki/rel
While you're at it, read about @microformats's use of the rel attribute. xfn, rel-tag, rel-license, rel-nofollow, etc.
http://microformats.org/wiki/rel