Creates a widget that outputs the short URL to the current post or page. Requires the YOURLS: WordPress to Twitter plugin.
Visit Appearance -> Widgets and then drag the "YOURLS: Short URL" widget into your sidebar.
Type a title for your widget, such as "Short URL".
Enter some content to be displayed. Use the placeholders where you want the data to show up. I use the following on my blog with the add paragraphs checkbox checked:
Want to Tweet about this [type]? Then here's the short URL to this specific [type]: <a href="[url]">[url]</a>