You don't have to specify the URL of your items - the plugin generates it automatically for either URL types (normal or SEF).
Buttons are shown according to your choice before or after the text of your articles.
The plugin contains "Exclude categories" and "Exclude articles" parameters which give you the option not to display the buttons inside some articles.
Unzip the package first. It contains 2 versions, one compatible with Joomla 1.5 and another compatible with Joomla 1.6/1.7/2.5.
Languages: English & French.