how do you send someone a message on twitter?

[frankie1]

how do you send someone your following a message on twitter? do they have to follow you in order to see it?

If you follow a celebrity on twitter can you send them a message that they could see?
thanks

[Emerica]

They have to follow you in order for you to send a message to them, just tweet on their wall.

[Yorkshire Bex.]

You can't send anyone a private message .on Twitter unless they are following you too.

You can, however, post a Tweet on their Home page. I am following several celebrities on Twitter some of whom are following me and some aren't.
You could send a tweet to the celebrity and ask them to follow you because you want to send them a direct message but there is no guarantee that they will.