Watch what you twitter

By Brian Williams, Anchor and managing editor

If you've been following the Iran coverage...and you didn't know what Twitter was before...you've received a Master's degree in it over the last few days. It's been a valuable mode of communication during this crisis. To be fair, life on Twitter goes on -- the ruminations and daily machinations of thousands of users, (including a lot of friends of mine, while I've been able to resist thus far) one of whom wondered aloud to his "followers" yesterday, while ordering a bagel in New York: "I still wonder how they get the cream cheese in those small tubes." So it's not all foreign policy. But I digress. Twitter users, those who have signed up to follow the tweets of others, are quick to pounce when they see fresh material. Here is one such instance. While I make no value judgments about the sender or what set them off, there's some truly inventive material here to be admired.

This is an aside. We continue to cover Iran (we'll hear from Ali Arouzi again tonight from Tehran, and Richard Engel in New York, wanting badly to be in Tehran) and wait for the next developments like everyone else. We have a Making A Difference report tonight, as well as reporting on the mid-air tragedy on today's Continental trans-Atlantic flight. We hope you can join us.