Have you ever minimized your Facebook browser window when your supervisor walked past your desk, afraid you might appear unprofessional? Social-networking guilt may soon be a thing of the past as a new breed of social networking sites for scientists clamor to be the next great timesaver in the lab–for you and your supervisor. These science-specific, Web-based networks combine handy library and document-sharing tools with a social twist. Such sites permit scientists to “help out each other with protocols, discuss topics, prepare for scientific meetings, maybe even show off your research a little bit,” says social network user Erika Gyengesi, a neuroscience postdoc at Yale University.

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