Help / HelpSocialNetworks
Social Networks
it is disabled in the default installation, to prevent contacting external servers if you don't need those feature.
Google plus one
If googleplusone.php is enabled in your local/config.php, you can add a button +1 on your pages with this code:
(:googleplusone size=small:)
(:googleplusone size=small:)
Add This
(:addThis username="myUsername" btn="sm-share":)
(:addThis btn="sm-share":)