Simon Owens looks at the impact of bloggers on the dissemination of both good and bad information about swine-origin influenza H1N1. He spoke with Vincent Racaniello of virology blog (virology.ws), Mike Coston of Avian Flu Diary (http://afludiary.blogspot.com/), and Crawford Kilian of H5N1 blog (http://crofsblogs.typepad.com/h5n1/).