MediaWiki:Wikifeatures-feature-description-wgEnableWallExt

The message wall extension would archive the current state of your user talk page, then convert it to a "message wall" — something that looks and behaves very much like the "wall forum" extension, below. We've debated the issue before, but it encountered resistance. That discussion was before adoption of the wall forum, though, so it would be logical to revisit the issue at some point in the future.

Do not enable until a new discussion decides on a change.