How to setup the share this
To setting the share this on your site, please make the following steps:
1) Go to admin MGS -> General Setting, expand "Share This" tab, here you can enable/disable the share this, specify what page the share this will display
2) Access this link: https://platform.sharethis.com, enter an email address and password ( notice: you can use any email and password, not need correctly ) then watch the video below: