On Twitter, a popular social networking site, users can post text updates or follow updates from other users. Twitter differs from other social networking sites in that the character limit for an update is 140 characters. The small character limit lends itself well to poems, such as haikus, so writers often search for a way to add line breaks to a Twitter update to keep the formatting of their poems intact. You can learn how to add a line break to a Twitter update in just a few steps.
Visit the Twitter website at Twitter.com and log in with your account information.
Click inside the "What's happening?" box at the top of the screen to insert your cursor.
Type out your first line of text, then insert a line break by holding down the Shift key and pressing the Enter key on your keyboard.
Enter more text on the new line. When you're finished, click "Tweet."
This line break will show up in certain-third party Twitter clients (such as Seesmic) but will not show up on the Twitter website. It is also not possible to use this line break method on any client other than the official Twitter website.