[quote=@Crimson Flame]
[@anothered] Can Selena actually see those messages? :hmm
[/quote]

They're just random people's messages on a live stream. Maybe someone in her entourage is her social media intern and they're worried about public reception of her. Selena doesn't seem like the type to be reading random comments on the internet though. You can just think of the New Messages as a reminder that millions of people are watching.