rel="home" --> Bad value home for attribute rel on element a: Keyword home is not registered.

<a href="http://www.toseco.at/" title="ToSeCo Consulting" rel="home">ToSeCo
Consulting</a>
The output is..
Bad value home for attribute rel on element a: Keyword home is not
registered. 
.tp://www.toseco.at/" title="ToSeCo Consulting" rel="home">ToSeCo
Consulting</a>
Syntax of link type valid for <a> and <area>:
A whitespace-separated list of link types listed as allowed on <a> and
<area> in the
<http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#link
Types> HTML specification or listed as an allowed on <a> and <area> on the
<http://microformats.org/wiki/existing-rel-values#HTML5_link_type_extensions
> Microformats wiki without duplicate keywords in the list. You can register
link types on the
<http://microformats.org/wiki/existing-rel-values#HTML5_link_type_extensions
> Microformats wiki yourself. 
 
http://www.toseco.at
 
Ist in the
<http://microformats.org/wiki/existing-rel-values#HTML5_link_type_extensions
> Microformats wiki as i can see.
A few rel values have been developed as drafts as a result of going through
most of the microformats  <http://microformats.org/wiki/process> process,
and are thus listed here for your serious consideration. You may use these
values, and if you find any problems with them please point them out on the
respective "issues" page for the rel value. 

rel value 
summary 
proposed in 
external spec (if any) 

 <http://microformats.org/wiki/rel-pronunciation> pronunciation 
.indicates that the destination of the 'link' element is a document
providing a pronunciation lexicon for speech-synthesis purposes. 
 <http://microformats.org/wiki/rel-pronunciation> rel-pronunciation 
	

 <http://microformats.org/wiki/rel-directory> directory 
.indicates that the destination of the hyperlink is a directory listing
containing an entry for the current page. 
 <http://microformats.org/wiki/rel-directory> rel-directory 
	

 <http://microformats.org/wiki/rel-enclosure> enclosure 
.indicates that the destination of that hyperlink is intended to be
downloaded and cached. 
 <http://microformats.org/wiki/rel-enclosure> rel-enclosure 
RFC4287 <http://www.apps.ietf.org/rfc/rfc4287.html>  

 <http://microformats.org/wiki/rel-home> home 
.indicates that the [referenced document] is the homepage of the site in
which the current page appears. 
 <http://microformats.org/wiki/rel-home> rel-home 
	

 <http://microformats.org/wiki/rel-payment> payment 
. 
 <http://microformats.org/wiki/rel-payment> rel-payment
	
 
 
Best regards 
 
Robert