Ricardo Gonzalez

del.icio.us for WordPress displays your latest del.icio.us bookmarks in your WordPress blog.
Features
<pre><code>* Simply
* Customizable
* Widget ready
* Uses WordPress resources (no extra files needed)
* No options page (yes, it is a feature)
* Displays bookmarks tags (optional)
* Filter bookmarks by tag(s) (optional)
</code></pre>
Usage
If you use WordPress widgets, just drag the widget into your sidebar and configure. 
If widgets are not your thing, use the following code to display your latest bookmarks:
<pre><code><?php delicious_bookmarks("username"); ?>
</code></pre>
For more info (options, customization, etc.) visit <a href="http://rick.jinlabs.com/code/delicious" title="del.icio.us for WordPress" rel="nofollow ugc">the plugin homepage</a>.

del.icio.us for WordPress

del.icio.us for WordPress displays your latest del.icio.us bookmarks in your WordPress blog.

Scott Grayban

It puts a bar of icons at the bottom of each post allowing your readers to submit your posts to several different 
social networking and bookmarking sites. (del.icio.us, digg, fark, etc.)
The original plugin was called <a href="http://blog.calevans.com/2006/02/08/notable-another-wordpress-plugin/" rel="nofollow ugc">wp-notable</a> 
but no longer worked or was supported. The author was Cal Evans.

notable

Adds social bookmark links to each blog entry.

del.icio.us for WordPress vs notable