As a little learning exercise, I created a plugin for WordPress that adds a small Twitter icon to the bottom of each post. When a reader clicks on that icon they are prompted to enter their Twitter username and password, and a short message (the title of the post and a link to it) will be added to their Twitter feed, allowing them to share the post with their followers.
If you’d like to play with it (and I emphasise at this point that this is still a work in progress), you can download it. Instructions for installation and customisation are after the jump.