Having just written about social software and national security, I find the situation in Iran to be rather fascinating. It's amazing to see the huge role that social sites are playing in the 2009 Iranian election and, perhaps, the 2009 revolution.
Social Networks Spread Iranian Defiance Online – Iranians are blogging, posting to Facebook and, most visibly, coordinating their protests on Twitter, the messaging service. Their activity has increased, not decreased, since the presidential election on Friday and ensuing attempts by the government to restrict or censor their online communications.
Latest Updates on Iran’s Disputed Election – excellent and very frequently updated coverage from the New York Time's blog, The Lede.
Twitter coverage from mousavi1388.
UPDATE: good photos from .faramarz on Flickr.
UPDATE 6/16 22:38: Lens Blog photo series. Excellent.