BLITZER: A new tax for some users of amazon.com. Kate is back. She is monitoring that and some of the other top stories in THE SITUATION ROOM right now. What's going on here?</s>KATE BOLDUAN, CNN CONGRESSIONAL CORRESPONDENT: At least this does not affect your holiday shopping this year. Amazon.com will start collecting sales tax in Massachusetts, the world's largest online retailer struck a deal with the state that goes into effect next fall. Online retailers are not required to collect taxes unless they have a physical presence in the state. It's estimated Massachusetts has lost some $600 million in e-commerce sales tax revenue since 2007. And after much discussion and attention, the pope has sent his first tweet ever. Pope Benedict XVI tweeted this. Quote, "Dear Friend, I am pleased to get in touch with you through Twitter. Thank you for your generous response. I bless all of you from my heart." The pope is tweeting from the handle @pontifex, which means bridge builder in Latin. The pope already has 900,000 followers on his English language account. Just after his first tweet. And people around the world are celebrating today's date of 12/12/12. It's the last of such triple digit date that most of us will ever see. It won't happen again until January 1st, 2101. For some superstitious couples that means a rush down the aisle. One Vegas chapel say it will perform more than 100 weddings just today and you know there are some men out there going at least I can remember the date of my anniversary.</s>BLITZER: They should get married on 12/12/12 but at 12:00 noon, 12 minutes afternoon, 12 seconds after 12 minutes.</s>BOLDUAN: I don't if you're in the newsroom, but we were taking pictures of the clock when it hit that today.</s>BLITZER: That's pretty cool. Thank you. During the next hour of THE SITUATION ROOM, by the way, CNN's Arwa Damon will report on the search for Syria's chemical weapons. Also, big changes coming over at the Pentagon, we have the latest on who -- who possibly could be the next secretary of defense.
Amazon.com To Collect Massachusetts Sales Tax; Pope Sends First Personal Tweet; Celebrating 12/12/12