CNN then edits and curates the submissions into a TV show and also uses the footage in their news broadcasts.
" iReporters and social media users spring into action immediately after the catastrophic earthquake in Haiti uploading images of the quake and the immediate aftermath. They also used Skype, text messages, Twitter and Facebook to keep the world connected as much as possible without a reliable internet connection, phone lines or even power. Thousands of reports of missing people flooded into iReport as people tried to connect with loved ones."
This is a great example of a news network tapping into citizen journalism. It also highlights the importance of having different channels for citizens to submit news (phone, facebook, twitter, email) and a curatorial process that takes the best submissions and broadcasts them.