In an effort to boost visibility and grab younger members' attention, the largest US coalition of biomedical research associations has launched pages on Twitter and Facebook. The Federation of American Societies for Experimental Biology has 44 Twitter followers and 45 'fans' on its Facebook site, according to communications assistant Jennifer Pumphrey. Twitter is a social-networking and micro-blogging service, Facebook a social-networking website. "We wanted to capture this audience that is more dependent on electronic media," says federation president Richard Marchase, noting that this effort will supplement e-mail and press releases. The federation updates its Facebook page weekly and 'tweets' once or twice a day.