User blog comment:DaNASCAT/Technical Update: May 24, 2011/@comment-765166-20110526144207/@comment-2093602-20110529200345

Wikia labs is live on all wikis now. You can use it through Special:WikiaLabs. You can enable article comments there.

Edit: You need to be the admin of the wiki to enable or disable functions, but anyone can give feedback.