This plugin also supports WPMU since v 2.2 and it is a unique plugin which automatically enables a toolbar for all outgoing links from blog post, similar to stumbleupon or facebook toolbar.
You can customize the widgets that will show up on the toolbar using the admin panel. Once the plugin is enabled, whenever visitor clicks on an outbound link from blog post or page, it will open with wordpress toolbar at the top. By default wordpress toolbar shows following widgets on the toolbar which can be enabled/disabled from admin panel:
- Link back to your blog home
- Link back to your blog post/page from where user came to this toolbar
- A list of social share icons (defaults to twitter,facebook,stumbleupon,…) using which the user can share your blog post/page
- Comment back link to the referrer blog post
- Leave toolbar (shown as a cross button), using which user can leave this toolbar
Requires WordPress Version: 2.6 or higher