User blog comment:Cook Me Plox/What do you want to see from Wikia?/@comment-1042975-20111022193127/@comment-13301-20111023102702

A wiki system has some features that are not intended to be used by a forum: Recentchanges, Whatlinkshere, page transclusion, wiki-specifics spam filters and abuse filters, etc.

A wiki with a vibrant forum using the MediaWiki engine is, first of all, a waste of resources for the server, because of how MediaWiki works. MediaWiki was not designed for hosting forums and thus lacks a lot of functionality about forums. But also, it greatly interferes with the normal wiki content, specially for maintenance, since it pollutes recentchanges, backlinks (Special:Whatlinkshere) and image usage.

This is one of the main concerns about MessageWall, ArticleComments, BlogComments and so on. If Wikia is making forums using the wall system, communities should restrict them to discuss wiki-related topics only.