Thread:B1bl1kal/@comment-366087-20170324235636

Default Wall Message Titles take this format when a user does not place something in the "What's this about?" box. Like I just did.

While somewhat annoying, it is done automatically by the Wikimedia software and not by the user intentionally other than proceeding to "post without a title.

Test it yourself by sending me a message with a blank title. 