Hot on the heels of my No DiggBar, I've created another extension for WordPress!
Shorter Links provides a <link> tag in the <head> section of your page with a shorter url and appropriate tags for use with the new revCanonical system. Further details can be found at laughingmeme.org, shiflett.org or benramsey.com.
The link created looks like this:
By default, the shorter url is simply {your domain}/{post id}, but the plugin also creates a custom field called "Shorter link" once a post is saved, so that you can change the shorter link to a more memorable set of characters.
Rather handily, Simon Willison, has produced a bookmarklet called Shorten so you can find out if the page you are looking at has a shorter link or not.
As an example, my Zend Framework Tutorial page has a canonical URL of http://akrabat.com/zend-framework-tutorial. I have set up a Shorter Link of http://akrabat.com/zft which will redirect to the correct page. The <link> tag for this is:
<link rev="canonical" rel="alternate shorter" href="http://akrabat.com/zft" />
Why not download Shorter Links and have a play?
Update, the latest version uses rel="shorturl".
