Twitter: Send a private message - is that possible?

Even if Twitter is only intended for short messages, you can also send private messages. However, the prerequisite is that the person follows you - is a follower.

Send a tweet to a single person

• To do this, type a [d] in the tweet field, followed by a space and then the desired Twitter name without the preceding [@].
• Then continue to write your message. The website should recognize the direct message and change the button to "Send message", which you can now use to send the message.
• You can get an overview via the menu bar above under "Messages".

You can find more tips and tricks on Twitter here.