Come up to speed on Twitter
CrossRef's Kirsty Meddings shows how Twitter worked at the recent UKSG meeting: http://tinyurl.com/UKSGtweets.
A reassuring word that actual face-to-face conversations are not dead from her article published in UKSG Serials e-News: "It was also good to see people seeking each other out in person after having exchanged tweets, to continue conversations in a more traditional manner with people that they probably otherwise would not have met."