It's all a little hard to digest, so I don't have much to say. One really hoped for a non-fraudulent election there, with the popular pro-reform candidate Mir Hossein Mousavi emerging victorious, but it really looks like something odd and unsavory occurred. (For example, Mousavi was leading Ahmadinejad by 2 to 1 in Tehran in a poll last week, but Ahmadinejad won Tehran 52% to 46% in the reported election results).
John Cole outlines the top pieces of evidence suggesting election fraud. But see WaPo analysis saying the election results might actually be correct.
Election statistician extraordinaire Nate Silver is stumped and explains why.
Andrew Sullivan has a great collection of photos, YouTubes, and tweets from inside Iran, where upwards of 3 million people are protesting in spite of the ban on public protesting.
Nico Pitney is liveblogging the uprising over at The Huffington Post.
UPDATE: Real-time reporting on Twitter by guys like this one are beating the mainstream media all to hell. He just tweeted about shootings in Azadi Square. In fact, mainstream media pretty much has no access to Iran, so it too is following tweets.