The dedi's

SCRIPNYA :

<!-- AddThis Button BEGIN -->
<div class='addthis_toolbox addthis_default_style' expr:addthis:title='data:post.title' expr:addthis:url='data:post.url'><a
href='http://www.addthis.com/bookmark.php?v=250&amp;username=xa-4b823817793e2f44' class='addthis_button_compact'>Share</a>
<span class='addthis_separator'>|</span>
<a class='addthis_button_facebook'></a>
<a class='addthis_button_myspace'></a>
<a class='addthis_button_google'></a>
<a class='addthis_button_twitter'></a>
</div>
<script type="text/javascript" src="http://s7.addthis.com/js/250/addthis_widget.js#username=xa-4b823817793e2f44"></script>
<!-- AddThis Button END -->

OK, login ke blogger.com
Klik Edit HTML
Centang Expand Widget Templates
Lalu cari <div class="post-footer">
Setelah dapat paste kan kode AddThis Button diatas tepat dibawah <div class="post-footer">
Save Template
View Blog
Eh udah jadi :).

Note: kalau tidak ketemu <div class="post-footer"> paste dibawah kode ini juga bisa <p class='post-footer-line post-footer-line-1'>