I’ve updated my Shortcut Macros plugin to make it WordPress 2.5 compatible.
This plugin allows you to set up shortcuts that expand into longer text when you save a post/page. For example, if you link to my site often, you might create a macro of
ak. You type
##ak into a post/page and when you save it will expand to
<a href="http://alexking.org/">Alex King</a>.
The download and more information are available on my WordPress Plugins page.
If you have any trouble with this, please open a thread in the WP Support Forums and send me the link.