User blog comment:Rewire387/Weird stuff/@comment-3235402-20121129221341

You mean at the bottom right in a green box? That's Wikia's doing. Occasionally the staff (not to be confused with the admins of each individual wiki) will send out a message across all Wikia, usually announcements, or stuff like a survey. This one was about using videos on Wikia.

If it wasn't that, then we have a spammer in our midst. Which pages?