Tutorial Automatic Social Media Links
This would go inside the loop, probably underneath the_content(), probably in your single.php file.
// bookmark on Delicious
<a rel="nofollow" href="http://delicious.com/post?url=<?php the_permalink(); ?>&title=<?php echo urlencode(get_the_title($id)); ?>" title="Bookmark this post at Delicious">Bookmark at Delicious</a>
// submit to Digg
<a rel="nofollow" href="http://digg.com/submit?phase=2&url=<?php the_permalink(); ?>" title="Submit this post to Digg">Digg this!</a>
// tweet on Twitter
<a rel="nofollow" href="http://twitter.com/home?status=<?php echo urlencode("Currently reading: "); ?><?php the_permalink(); ?>" title="Share this article with your Twitter followers">Tweet this!</a>
// submit to StumbleUpon
<a rel="nofollow" href="http://www.stumbleupon.com/submit?url=<?php the_permalink(); ?>&title=<?php echo urlencode(get_the_title($id)); ?>" title="Share this post at StumbleUpon">Stumble this!</a>
// share on Facebook
<a rel="nofollow" href="http://www.facebook.com/sharer.php?u=<?php the_permalink();?>&t=<?php echo urlencode(get_the_title($id)); ?>" title="Share this post on Facebook">Share on Facebook</a>
// submit to Blinklist
<a rel="nofollow" href="http://blinklist.com/index.php?Action=Blink/addblink.php&url=<?php the_permalink(); ?>&Title=<?php echo urlencode(get_the_title($id)); ?>" title="Share this post on Blinklist" >Blink This!</a>
// store on Furl
<a rel="nofollow" href="http://furl.net/storeIt.jsp?t=<?php echo urlencode(get_the_title($id)); ?>&u=<?php the_permalink(); ?>" title="Share this post on Furl">Furl This!</a>
// submit to Reddit
<a rel="nofollow" href="http://reddit.com/submit?url=<?php the_permalink(); ?>&title=<?php echo urlencode(get_the_title($id)); ?>" title="Share this post on Reddit">Share on Reddit</a>