Twitter postpones maintenance, as site remains main news source on protests in Iran.By Gil Kaufman
Jared Cohen
Photo: Ahmad Al-Rubaye/ AFP/ Getty Images
By now, you've likely seen the images of mass protests in Iran following the weekend reelection of President Mahmoud Ahmadinejad in balloting that supporters of rival moderate candidate Mir-Hossein Mousavi say was rigged.
And, since the Iranian government informed Western journalists