Twittering has cost a CNN reporter her job.Octavia Nasr who lamented the death of Lebanese Shi'ite cleric Ayatollah Mohammed Hussein Fadlallah, an early mentor of the militant group Hezbollah in her tweet was sacked after she her comment was found unacceptable by CNN. A CNN spokesman said: "CNN regrets any offence her Twitter message caused. It did not meet CNN's editorial standards."