It's called direct messaging. You do not post anything on your Twitter feed that you do not want to broadcast to the world. It's not like Facebook where you can customize the privacy. It's either 100% private through direct messaging, or it's 100% public. There is no other option. I've used direct messaging to friends for things that I don't want to tell the whole world, and I don't even have 2% of the number of followers she does. She should have known better. It was a stupid comment, and a stupid action. I won't hate on her, but she fully deserves a from me for that. She can VOTE now. Are you saying that we should raise the voting age to 25 or something since clearly 18-year-olds can't be trusted to know what is offensive and/or hurtful to other people?