User blog comment:RePeat/Community Poll on Message Walls/@comment-18933973-20130624000420/@comment-4596663-20130624142943

Not really DB. I have tried to make a spoiler that follows the same color of the background of the talk pages and found out that it works perfectly till the color changed again... By using that, or changing the TP background to white and then leave a open  color ciruit, all messages are considered invisible to others. Message walls on the other hand No matter what is done, you can still see what is going on. Also your's and Obi's point about people looking into the diff to find out what's going on, only editors have been doing that. Besides that, there is no evidence that stalkers have been looking through diffs in the Talk pages.