User blog comment:DaNASCAT/Technical Update: January 6, 2016/@comment-24473195-20160107161235

Well, my earlier statement about a proper namespace for javascript gadgets and their json has been proven. This new ProfileTags script needs MediaWiki:ProfileTags to be whitelisted in all Wikis: http://dev.wikia.com/wiki/Talk:ProfileTags

I just hope the updates to insights actually make them work reliably. They've been buggy for a very long time.