This plugin for joomla has the functions:
Selection button states published or not.
The positioning of buttons on the left, right, center.
The positioning of buttons at the top of articles, below the article, at the bottom and at the top of the article.
Title under the buttons.
10 additional fields for other social networking buttons.
Includes 16 buttons of social networks.
All links are hidden from indexing.
All links open in a new tab or pop-up window.