Are you meaning because people knew it was a 16-year-old in the talk dirty to me comment? The only reason I knew is because the avatar, what appears next to each message, (at the time) was an obviously minor girl. She had posted about being stuck in an elevator and if you hover over the avatar, it lists how old you are (for example, I can see that you are 73 by just hovering over "Jangles"). I normally wouldn't have noticed, but for some reason did on that one.