Twitter, the 140 character social media micro-blog, was scheduled to go down for maintenance on monday night. But, according to the CNN blog, a little thing called the Iranian elections and a request from the US State Department caused them to change their scheduled downtime to yesterday afternoon from 2-3 PST (middle of the night Tehran time) in order to ensure that the flow of information from Iran remains open and that Iranians can continue to communicate internally and with the rest of the world. This is a pretty amazing development in that, despite the Iranian restrictions on journalists and news organizations, the world is still able to get up to the minute accounts - complete with video on youtube, hashtags on twitter and facebook. Now libraries just have to figure out how to collect, preserve and organize this massive flow of information ;-)

Mashable has more on why this matters as well as a HOWTO guide on following the elections.