Qitly.com

<?php
$connectURL = file_get_contents("http://qitly.com/api/new?url=".wp_get_shortlink()); ?>
<?php if (function_exists('wp_get_shortlink')) { ?>
<div><span class="post-shortlink">Shortlink:
<input type='text' value='<?php echo $connectURL; ?>' onclick='this.focus(); this.select();' />
</span></div>
<?php } ?>