because, you have to copy twice times the code, like that: (and the second code have to inside this labels <ItemPage> and </ItemPage>)
</BlogItemBacklinksEnabled>
<!-- get your own widget at
http://spotback.com -->
<BlogDateHeader><script>var sb_post_date = "<$BlogDateHeaderDate$>";</script></BlogDateHeader>
<script>var sb_url_to_rate ="<$BlogItemPermalinkUrl$>";</script>
<script>var sb_rated_title = "<$BlogItemTitle$>";</script>
<script>try { var sb_dp = Date.parse(sb_post_date + ' ' + "<$BlogItemDateTime$>"); var sb_rated_creation = isNaN(sb_dp)? new Date() : new Date(sb_dp); } catch (e) { sb_rated_creation = new Date(); }</script>
<script src='http://spotback.com/scripts/widgets/load.js?wid=10844'></script>
<noscript><a href="http://spotback.com" alt="Rate everything widget"><img src="http://spotback.com/images/rating.gif?q=<$BlogItemPermalinkUrl$>" alt="user rating"/></a></noscript>
</MainOrArchivePage> <$BlogItemControl$>
</p>
<ItemPage>
<!-- get your own widget at
http://spotback.com -->
<BlogDateHeader><script>var sb_post_date = "<$BlogDateHeaderDate$>";</script></BlogDateHeader>
<script>var sb_url_to_rate ="<$BlogItemPermalinkUrl$>";</script>
<script>var sb_rated_title = "<$BlogItemTitle$>";</script>
<script>try { var sb_dp = Date.parse(sb_post_date + ' ' + "<$BlogItemDateTime$>"); var sb_rated_creation = isNaN(sb_dp)? new Date() : new Date(sb_dp); } catch (e) { sb_rated_creation = new Date(); }</script>
<script src='http://spotback.com/scripts/widgets/load.js?wid=10844'></script>
<noscript><a href="http://spotback.com" alt="Rate everything widget"><img src="http://spotback.com/images/rating.gif?q=<$BlogItemPermalinkUrl$>" alt="user rating"/></a></noscript>
</ItemPage>
</div>
<!-- End .post -->