Extension:AddThis

The AddThis extension adds an AddThis widget to the sidebar and the upper right corner of articles - just below the article's title and the site's tagline. This allows you to have things like Facebook's "Like" or "Recommend" button, a button for Tweeting, Google +'ing, etc.

Usage
By default, the sidebar is set to appear on all pages.

By default, the toolbar will appear in the header of all articles in a content namespace.

Using the  tag, you can:
 * Display the toolbar on pages in non-content namespaces
 * Display the toolbar when it has been disabled in LocalSettings.php
 * Display the toolbar on places other than the page header

Configuration
For example, you can disable the article header toolbar by adding this to LocalSettings.php:
 * Configure as required.

While it does not appear to be required, it is highly recommended that you register an AddThis account and enter your user/profile id number to LocalSettings.php :

Configuration parameters
attribute will help wikipages to load faster by loading the JavaScript at the same time as the page content, instead of delaying the page load until after the JavaScript is loaded.
 * should instead be
 * should instead be

Ideas being considered
Time will be spent on these if folks show interest on the wish list or talk page
 * Setting to change default namespaces to display page header toolbar on
 * Setting via LocalSetting.php and tag to change toolbar display from the right side to the left

Requests by developer

 * Add any wishes to wish list or request on talk page
 * Please test on wikis and report back via talk page
 * Requires at least MW1.17 due to use of ResourceLoader
 * Suggestions from developers are especially welcome! Contributions included will be credited as co-authors
 * Language translations will be credited