Answer: No. That thing you see just means someone sent you a message on your talk page. If you look at the upper right hand side of your window, you will see your name, and right next to it a link called "my talk". If you click there, it will take you to your talk page, where you can read your message. Every page has a "talk tube" linked to it, so people can discuss conflicts, or post notes, plan, plot, etc. All talk pages are open for editing by anyone.