Produces output very similar to <a href="http://delicious.com/help/linkrolls" rel="nofollow ugc">delicious’s linkrolls script</a>, but in a way that isn’t guaranteed to mess with most themes.
Allows you to customize:
<ul>
<li>The number of links to display</li>
<li>Whether the link’s description is shown, if you provided one</li>
<li>Whether the link’s tags are shown</li>
<li>Whether the link’s favicon is shown</li>
<li>Showing only links with certain tags</li>
<li>And the ever-popular widget title</li>
</ul>
<h3>History</h3>
<ul>
<li>1.2.1: Bump the WordPress version and get rid of some legacy mentions of 
“del.icio.us”.</li>
<li>1.2: Update for the annoyingly backwards-incompatible nature of the new 
delicious.com design and v2 feeds api.</li>
<li>1.1: Allow multiple instances of the widget.</li>
<li>1.0: Initial release.</li>
</ul>

delicious-plus widget

Was a great plugin, but delicious have changed their API or discontinued the feeds or something, so it doesn't work anymore.
Edit: Found the solution. Just replace feed.delicious.com with previous.delicious.com in the PHP file.



Apparently doesn't work now

Makes available a widget to display your recent links tagged with delicious.

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.

delicious-plus widget vs del.icio.us for WordPress