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Twitter is a social network allowing you to write your own and read others' status updates in messages not exceeding 140 characters. The status updates are displayed on your profile and are received by people who follow you. You decide who you want to receive status updates from. Before you can use the application, it needs to be downloaded and installed. Follow these instructions to install Twitter.
Before you can install Twitter, you need an Apple ID. If you don't have an Apple ID, you can create one at www.apple.com
Log on to App Store if you're asked to do so.
Wait a moment while the application is installed.