Everybody likes use social Bookmark links in his/her blog.
there is 2 ways to use social bookmark links on your blogs:
1. you can use AddThis Plugin
or
2. add these links to your Entry Archives:
<a href="http://twitter.com/home?status=<$mt:EntryTitle$>+<$mt:EntryPermaLink$>">Twitter</a>

<a href="http://facebook.com/share.php?u=<$mt:EntryPermaLink$>&t=<$mt:EntryTitle$>">Facebook</a>

<a href="http://digg.com/submit?phase=2&url=<$mt:EntryPermaLink$>&title=<$mt:EntryTitle$>">Digg</a>

<a href="http://del.icio.us/post?url=<$mt:EntryPermaLink$>&title=<$mt:EntryTitle$>">Delicious</a>

<a href="http://www.google.com/bookmarks/mark?op=add&bkmk=<$mt:EntryPermaLink$>&title=<$mt:EntryTitle$>">Google</a>

<a href="http://mixx.com/submit?page_url=<$mt:EntryPermaLink$>&title=<$mt:EntryTitle$>">Mixx</a>

<a href="http://reddit.com/submit?url=<$mt:EntryPermaLink$>&title=<$mt:EntryTitle$>">Reddit</a>

<a href="http://stumbleupon.com/submit?url=<$mt:EntryPermaLink$>&title=<$mt:EntryTitle$>">Stumbleupon</a>

<a href="http://technorati.com/faves?add=<$mt:EntryPermaLink$>&title=<$mt:EntryTitle$>">Technorati</a> if you want to use icons, replace the name of the site with <img src="Your Icon Link">
Good Lock