I'm looking to develop a twitter plugin for Joomla 1.5.x.
This plugin would appear as a check box in the article editor.
If the checkbox is ticked on a 'save' then a link to the article would automatically be published in the twitter feed that the user specifies in the plugin interface.
Articles could be republished to twitter as often as they are saved.
The default for the checkbox would be unticked.
There is an existing twitter plugin in [url removed, login to view] that already publishes article links to twitter.
This is an open source plugin and could be modified to include the checkbox within the articles.