Plugin: Text Replace
Simple text replacement script for Wordpress. Be aware that the shortcut text that you use in your posts will be stored that way in the database (naturally). While calls to display the posts will see the filtered, text replaced version, anything that operates directly on the database will not see the expanded replacement text. So if you only ever referred to “America Online” as “:aol:” (where “:aol:” => “America Online“), visitors to your site will see the linked, expanded text due to the text replace, but a database search would never turn up a match for “America Online”. However, a benefit of the replacement text not being saved to the database and instead evaluated when the data is being loaded into a web page is that if the replacement text is modified, all pages making use of the shortcut will henceforth use the updated replacement text.