The NY Times states the obvious:
Clerics May Be Key to Outcome of Unrest

LA Times Middle East Blog Babylon and Beyond

Maryam Monalisa Gharavi, an Iranian ex-pat living in Brazil who writes the popular blog South/South, told Babylon and Beyond she is frustrated by both the hypocrisy of traditional Western media, which remains silent on rigged elections that favor U.S. ally Egyptian President Hosni Mubarak, and the unreliable nature of citizen journalism.

"[T]here has been a saturation of rumors on Twitter and Facebook, some of them flying off the handle (e.g. Mousavi was never under house arrest, the protests did not reach 3 million over the weekend, etc.). My friends and family in Iran are still able to get through using filter proxies, so I rely on their eyes and ears as well. I've just read such outlandish stuff that I won't report it until I have some way of verifying it," she wrote in an e-mail.

Still, when asked to share her favorite websites for analysis and news on Iran, Gharavi instead offered the Twitter feed of fellow Harvard researcher Alireza Doostdar.