Pedro Beltrao at the Public Rambling blog says there never seems to be enough time to keep up with all the literature researchers keep churning out. In 2009, 848,865 papers were added to PubMed, he says — that's something like 1.6 papers per minute. While there's definitely no scarcity of outlets to publish, is anyone even paying attention? "It is very literally impossible to keep up with the current literature without some sophisticated filtering system," Beltrao says.