Talk:SAOF Royal Family/@comment-26249188-20150920122929/@comment-4814455-20151026114118

A Poweruser refers to a patron of the Wiki who has made 140 edits in the last 60 days. This is a wiki-specific flag (i.e. if you make 139 edits on this wiki and 1 on another, you will not be a Poweruser on either). Once obtained, however, the status is not removed until you are completely inactive for ~60 days.

This flag is experimental only and does not grant any special powers. It was implemented to help Wikia staff gather statistics.

http://community.wikia.com/wiki/User_blog:Rappy_4187/Technical_Update:_March_10,_2015#comm-809448

Also, it appears that Wikia is no longer using that flag for any statistical purpose. It may have been left in as a helpful feature for admins, as that was the general trend in that particular thread.

TL;DR: It's an arbitrary tag that grants no powers.