Congress Is All Atwitter, Daniel Newhauser, Roll Call: “Since the microblogging Web site Twitter launched in 2006, tens of millions of people have logged on and churned out billions of 140-character messages called tweets. And Congress has certainly embraced the trend. In fact, by early last year, some 20 Members were using the site, according to Tweet Congress, which monitors Members’ Twitter use. The current count, the group says, is 162 (plus 16 committees and seven caucuses). But computer-savvy political junkies already know that. Whether politicians are using Twitter to its full potential is another matter entirely.”