A feature to help new users leave messages on user talk pages.
During the user testing phase of WikiLove, it became apparent that inexperienced users were unable to determine how to leave a message on talk pages.
During the post-deployment analysis of WikiLove, it was discovered that a large number of users were utilizing that tool specifically to send messages to other users because they could not figure out any other way (they did not know that talk pages even existed).
Even if new users are able to locate the talk page, the concept behind the "new section" makes little sense (the idiomatic nature of the wording is targeted at experienced users). Further, the editing interface (for what the user considers to be a simple message) is overly complex and includes such wonderful esoterica like special character insertions, extensive warnings, "minor edit" checkboxes, and so forth.