Jeff Jarvis' Buzzmachine is required reading in the digital age, but if you're going to understand something new today, it should be his evaluation of how Twitter's open publishing system --- its API --- has particular value.
For a few days the Twitterverse has been alight with praise of the efforts by many people to employ Twitter's open system to help thwart efforts to curtail commentary coming from an Iran in political turmoil.
Jarvis articulates nicely the technical enabling of the Iran dissidents through Twitterphiles that employ its open-sourced publishing. In some ways people are pointing to this juncture as the time Twitter became of global value --- especially in view of restrictions on mainstream coverage --- but Jarvis is the first to put it smartly into sentences.